Check DNS, Urls + Redirects, Certificates and Content of your Website



B

Missing HSTS or Cookie-warnings

Checked:
15.09.2020 22:07:29


Older results

No older results found


1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
mail.estudosnacionais.com
A
192.99.144.235
Montreal/Quebec/Canada (CA) - OVH SAS
Hostname: vps-cdf3fa1f.vps.ovh.ca
yes
1
0

AAAA

yes


www.mail.estudosnacionais.com

Name Error
yes
1
0
*.estudosnacionais.com
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
yes


*.mail.estudosnacionais.com
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
yes



2. DNSSEC

Zone (*)DNSSEC - Informations

Zone: (root)
(root)
1 DS RR published



DS with Algorithm 8, KeyTag 20326, DigestType 2 and Digest 4G1EuAuPHTmpXAsNfGXQhFjogECbvGg0VxBCN8f47I0=



Status: Valid because published



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 20326, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 8, KeyTag 46594, Flags 256



1 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 30.09.2020, 00:00:00 +, Signature-Inception: 09.09.2020, 00:00:00 +, KeyTag 20326, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 20326 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 20326, DigestType 2 and Digest "4G1EuAuPHTmpXAsNfGXQhFjogECbvGg0VxBCN8f47I0=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: com
com
1 DS RR in the parent zone found



DS with Algorithm 8, KeyTag 30909, DigestType 2 and Digest 4tPJFvbe6scylOgmj7WIUESoM/xUWViPSpGEz8QaV2Y=



1 RRSIG RR to validate DS RR found



RRSIG-Owner com., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 28.09.2020, 17:00:00 +, Signature-Inception: 15.09.2020, 16:00:00 +, KeyTag 46594, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 46594 used to validate the DS RRSet in the parent zone



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 24966, Flags 256



Public Key with Algorithm 8, KeyTag 30909, Flags 257 (SEP = Secure Entry Point)



1 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner com., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 27.09.2020, 18:24:21 +, Signature-Inception: 12.09.2020, 18:19:21 +, KeyTag 30909, Signer-Name: com



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 30909 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 30909, DigestType 2 and Digest "4tPJFvbe6scylOgmj7WIUESoM/xUWViPSpGEz8QaV2Y=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: estudosnacionais.com
estudosnacionais.com
0 DS RR in the parent zone found



DS-Query in the parent zone has a valid NSEC3 RR as result with the hashed query name "8spqrncrs76eeskim0e1itau3j68bpcc" between the hashed NSEC3-owner "8sppp3i9mp9b88459e0rbqd2h0i5j4d2" and the hashed NextOwner "8spqvkuqn8l49v4fjre3itp4hqe96phd". So the parent zone confirmes the not-existence of a DS RR.
Bitmap: NS, DS, RRSIG Validated: RRSIG-Owner 8sppp3i9mp9b88459e0rbqd2h0i5j4d2.com., Algorithm: 8, 2 Labels, original TTL: 86400 sec, Signature-expiration: 20.09.2020, 05:37:41 +, Signature-Inception: 13.09.2020, 04:27:41 +, KeyTag 24966, Signer-Name: com



DS-Query in the parent zone sends valid NSEC3 RR with the Hash "ck0pojmg874ljref7efn8430qvit8bsm" as Owner. That's the Hash of "com" with the NextHashedOwnerName "ck0q1gin43n1arrc9osm6qpqr81h5m9a". So that domain name is the Closest Encloser of "estudosnacionais.com". Opt-Out: True.
Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner ck0pojmg874ljref7efn8430qvit8bsm.com., Algorithm: 8, 2 Labels, original TTL: 86400 sec, Signature-expiration: 22.09.2020, 04:41:59 +, Signature-Inception: 15.09.2020, 03:31:59 +, KeyTag 24966, Signer-Name: com



2 DNSKEY RR found



Public Key with Algorithm 13, KeyTag 2371, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 13, KeyTag 34505, Flags 256



1 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner estudosnacionais.com., Algorithm: 13, 2 Labels, original TTL: 3600 sec, Signature-expiration: 09.10.2020, 00:41:34 +, Signature-Inception: 10.08.2020, 00:41:34 +, KeyTag 2371, Signer-Name: estudosnacionais.com



Status: Good - Algorithmus 13 and DNSKEY with KeyTag 2371 used to validate the DNSKEY RRSet



Error: DNSKEY 2371 signs DNSKEY RRset, but no confirming DS RR in the parent zone found. No chain of trust created.

Zone: mail.estudosnacionais.com
mail.estudosnacionais.com
0 DS RR in the parent zone found



DS-Query in the parent zone has a valid NSEC RR as result with the domain name between the NSEC-Owner "mail.estudosnacionais.com" and the NextOwner "\000.mail.estudosnacionais.com". So the parent zone confirmes the non-existence of a DS RR.
Bitmap: A, 13, MX, TXT, AAAA, LOC, SRV, CERT, SSHFP, RRSIG, NSEC, TLSA, HIP, 61, 99, CAA



0 DNSKEY RR found






RRSIG Type 1 validates the A - Result: 192.99.144.235
Validated: RRSIG-Owner mail.estudosnacionais.com., Algorithm: 13, 3 Labels, original TTL: 300 sec, Signature-expiration: 16.09.2020, 21:07:51 +, Signature-Inception: 14.09.2020, 19:07:51 +, KeyTag 34505, Signer-Name: estudosnacionais.com



CNAME-Query sends a valid NSEC RR as result with the query name "mail.estudosnacionais.com" equal the NSEC-owner "mail.estudosnacionais.com" and the NextOwner "\000.mail.estudosnacionais.com". So the zone confirmes the not-existence of that CNAME RR, but the existence of that query name (minimal one RR with that name exists).
Bitmap: A, 13, MX, TXT, AAAA, LOC, SRV, CERT, SSHFP, RRSIG, NSEC, TLSA, HIP, 61, 99, CAA Validated: RRSIG-Owner mail.estudosnacionais.com., Algorithm: 13, 3 Labels, original TTL: 3600 sec, Signature-expiration: 16.09.2020, 21:07:52 +, Signature-Inception: 14.09.2020, 19:07:52 +, KeyTag 34505, Signer-Name: estudosnacionais.com



Status: Good. NoData-Proof required and found.



TXT-Query sends a valid NSEC RR as result with the query name "mail.estudosnacionais.com" equal the NSEC-owner "mail.estudosnacionais.com" and the NextOwner "\000.mail.estudosnacionais.com". So the zone confirmes the not-existence of that TXT RR, but the existence of that query name (minimal one RR with that name exists).
Bitmap: A, 13, MX, AAAA, LOC, SRV, CERT, SSHFP, RRSIG, NSEC, TLSA, HIP, 61, 99, CAA Validated: RRSIG-Owner mail.estudosnacionais.com., Algorithm: 13, 3 Labels, original TTL: 3600 sec, Signature-expiration: 16.09.2020, 21:07:52 +, Signature-Inception: 14.09.2020, 19:07:52 +, KeyTag 34505, Signer-Name: estudosnacionais.com



Status: Good. NoData-Proof required and found.



AAAA-Query sends a valid NSEC RR as result with the query name "mail.estudosnacionais.com" equal the NSEC-owner "mail.estudosnacionais.com" and the NextOwner "\000.mail.estudosnacionais.com". So the zone confirmes the not-existence of that AAAA RR, but the existence of that query name (minimal one RR with that name exists).
Bitmap: A, 13, MX, TXT, LOC, SRV, CERT, SSHFP, RRSIG, NSEC, TLSA, HIP, 61, 99, CAA Validated: RRSIG-Owner mail.estudosnacionais.com., Algorithm: 13, 3 Labels, original TTL: 3600 sec, Signature-expiration: 16.09.2020, 21:07:52 +, Signature-Inception: 14.09.2020, 19:07:52 +, KeyTag 34505, Signer-Name: estudosnacionais.com



Status: Good. NoData-Proof required and found.



TLSA-Query (_443._tcp.mail.estudosnacionais.com) sends a valid NSEC RR as result with the query name "_443._tcp.mail.estudosnacionais.com" equal the NSEC-owner "_443._tcp.mail.estudosnacionais.com" and the NextOwner "\000._443._tcp.mail.estudosnacionais.com". So the zone confirmes the not-existence of that TLSA RR, but the existence of that query name (minimal one RR with that name exists).
Bitmap: RRSIG, NSEC Validated: RRSIG-Owner _443._tcp.mail.estudosnacionais.com., Algorithm: 13, 5 Labels, original TTL: 3600 sec, Signature-expiration: 16.09.2020, 21:07:52 +, Signature-Inception: 14.09.2020, 19:07:52 +, KeyTag 34505, Signer-Name: estudosnacionais.com



Status: Good. NoData-Proof required and found.



CAA-Query sends a valid NSEC RR as result with the query name "mail.estudosnacionais.com" equal the NSEC-owner "mail.estudosnacionais.com" and the NextOwner "\000.mail.estudosnacionais.com". So the zone confirmes the not-existence of that CAA RR, but the existence of that query name (minimal one RR with that name exists).
Bitmap: A, 13, MX, TXT, AAAA, LOC, SRV, CERT, SSHFP, RRSIG, NSEC, TLSA, HIP, 61, 99 Validated: RRSIG-Owner mail.estudosnacionais.com., Algorithm: 13, 3 Labels, original TTL: 3600 sec, Signature-expiration: 16.09.2020, 21:07:52 +, Signature-Inception: 14.09.2020, 19:07:52 +, KeyTag 34505, Signer-Name: estudosnacionais.com



Status: Good. NoData-Proof required and found.

Zone: www.mail.estudosnacionais.com
www.mail.estudosnacionais.com
0 DS RR in the parent zone found



DS-Query in the parent zone has a valid NSEC RR as result with the domain name between the NSEC-Owner "www.mail.estudosnacionais.com" and the NextOwner "\000.www.mail.estudosnacionais.com". So the parent zone confirmes the non-existence of a DS RR.
Bitmap: RRSIG, NSEC


3. Name Servers

DomainNameserverNS-IP
www.mail.estudosnacionais.com
  arvind.ns.cloudflare.com

mail.estudosnacionais.com
  arvind.ns.cloudflare.com / 67m24
108.162.195.227
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
162.159.44.227
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
172.64.35.227
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
2606:4700:58::a29f:2ce3
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
2803:f800:50::6ca2:c3e3
San José/Provincia de San Jose/Costa Rica (CR) - Cloudflare, Inc.


 
2a06:98c1:50::ac40:23e3
London/England/United Kingdom (GB) - CloudFLARENET-EU

estudosnacionais.com
  arvind.ns.cloudflare.com / 67m29
108.162.195.227
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
162.159.44.227
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
172.64.35.227
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
2606:4700:58::a29f:2ce3
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
2803:f800:50::6ca2:c3e3
San José/Provincia de San Jose/Costa Rica (CR) - Cloudflare, Inc.


 
2a06:98c1:50::ac40:23e3
London/England/United Kingdom (GB) - CloudFLARENET-EU


  holly.ns.cloudflare.com / 67m33
108.162.194.133
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
162.159.38.133
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
172.64.34.133
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
2606:4700:50::a29f:2685
Montreal/Quebec/Canada (CA) - Cloudflare, Inc.


 
2803:f800:50::6ca2:c285
San José/Provincia de San Jose/Costa Rica (CR) - Cloudflare, Inc.


 
2a06:98c1:50::ac40:2285
London/England/United Kingdom (GB) - CloudFLARENET-EU

com
  a.gtld-servers.net


  b.gtld-servers.net


  c.gtld-servers.net


  d.gtld-servers.net


  e.gtld-servers.net


  f.gtld-servers.net


  g.gtld-servers.net


  h.gtld-servers.net


  i.gtld-servers.net


  j.gtld-servers.net


  k.gtld-servers.net


  l.gtld-servers.net


  m.gtld-servers.net


4. SOA-Entries


Domain:com
Zone-Name:com
Primary:a.gtld-servers.net
Mail:nstld.verisign-grs.com
Serial:1600200423
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:6


Domain:com
Zone-Name:com
Primary:a.gtld-servers.net
Mail:nstld.verisign-grs.com
Serial:1600200438
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:7


Domain:estudosnacionais.com
Zone-Name:estudosnacionais.com
Primary:arvind.ns.cloudflare.com
Mail:dns.cloudflare.com
Serial:2035127869
Refresh:10000
Retry:2400
Expire:604800
TTL:3600
num Entries:12


Domain:mail.estudosnacionais.com
Zone-Name:estudosnacionais.com
Primary:arvind.ns.cloudflare.com
Mail:dns.cloudflare.com
Serial:2035127869
Refresh:10000
Retry:2400
Expire:604800
TTL:3600
num Entries:6


Domain:www.mail.estudosnacionais.com
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


5. Screenshots

Startaddress: https://mail.estudosnacionais.com/accounts/login/?next=/, address used: https://mail.estudosnacionais.com/accounts/login/?next=/, Screenshot created 2020-09-15 22:09:07 +00:0

Mobil (412px x 732px)

567 milliseconds

Screenshot mobile - https://mail.estudosnacionais.com/accounts/login/?next=/
Mobil + Landscape (732px x 412px)

565 milliseconds

Screenshot mobile landscape - https://mail.estudosnacionais.com/accounts/login/?next=/
Screen (1280px x 1680px)

1275 milliseconds

Screenshot Desktop - https://mail.estudosnacionais.com/accounts/login/?next=/

Mobile- and other Chrome-Checks

widthheight
visual Viewport412732
content Size412732

Good: No horizontal scrollbar. Content-size width = visual Viewport width.

Chrome-Connection: secure. secure connection settings. The connection to this site is encrypted and authenticated using TLS 1.2, ECDHE_RSA with P-256, and AES_256_GCM.

Chrome-Resources : secure. all served securely. All resources on this page are served securely.

6. Url-Checks


:

:
DomainnameHttp-StatusredirectSec.G
• http://mail.estudosnacionais.com/
192.99.144.235
301
https://mail.estudosnacionais.com/
Html is minified: 109.03 %
0.216
A
Server: nginx/1.16.1
Date: Tue, 15 Sep 2020 20:08:14 GMT
Content-Type: text/html
Content-Length: 169
Connection: close
Location: https://mail.estudosnacionais.com/

• https://mail.estudosnacionais.com/
192.99.144.235
302
https://mail.estudosnacionais.com/accounts/login/?next=/
4.920
B
Server: nginx/1.16.1
Date: Tue, 15 Sep 2020 20:08:15 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 0
Connection: close
Location: /accounts/login/?next=/
X-Frame-Options: SAMEORIGIN
Vary: Accept-Language, Cookie
Content-Language: en

• https://mail.estudosnacionais.com/accounts/login/?next=/
No GZip used - 1321 / 3085 - 42.82 % possible
Inline-JavaScript (∑/total): 4/71 Inline-CSS (∑/total): 0/0
200

Html is minified: 132.63 %
4.813
B
small visible content (num chars: 53)
Username Password Remember me Log in Forgot password?
Server: nginx/1.16.1
Date: Tue, 15 Sep 2020 20:08:26 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 3085
Connection: close
Expires: Tue, 15 Sep 2020 20:08:26 GMT
Cache-Control: max-age=0, no-cache, no-store, must-revalidate
X-Frame-Options: SAMEORIGIN
Vary: Accept-Language, Cookie
Content-Language: en
Set-Cookie: csrftoken=BVJd1SJocjALPVyNQzxTVuYDH9z9OFTK2sMpOTIWlQm6WkLkAL8Gc7hZxa1a4aZH; expires=Tue, 14 Sep 2021 20:08:26 GMT; Max-Age=31449600; Path=/; SameSite=Lax; Secure

• http://mail.estudosnacionais.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
192.99.144.235
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://mail.estudosnacionais.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Html is minified: 109.03 %
0.236
A
Visible Content: 301 Moved Permanently nginx/1.16.1
Server: nginx/1.16.1
Date: Tue, 15 Sep 2020 20:08:20 GMT
Content-Type: text/html
Content-Length: 169
Connection: close
Location: https://mail.estudosnacionais.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de

• https://mail.estudosnacionais.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de

Inline-JavaScript (∑/total): 3/0 Inline-CSS (∑/total): 1/55
404

Html is minified: 123.31 %
4.860
A
Not Found
Visible Content: Sorry The requested page does not exist.
Info: Html-Content with meta and/or script, may be a problem creating a Letsencrypt certificate using http-01 validation
Server: nginx/1.16.1
Date: Tue, 15 Sep 2020 20:08:31 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 878
Connection: close
X-Frame-Options: SAMEORIGIN
Vary: Accept-Language, Cookie
Content-Language: en

• https://192.99.144.235/
192.99.144.235
400

Html is minified: 100.00 %
4.843
N
Bad Request
Certificate error: RemoteCertificateNameMismatch
Server: nginx/1.16.1
Date: Tue, 15 Sep 2020 20:08:21 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close

7. Comments


1. General Results, most used to calculate the result

Aname "mail.estudosnacionais.com" is subdomain, public suffix is ".com", top-level-domain is ".com", top-level-domain-type is "generic", tld-manager is "VeriSign Global Registry Services", num .com-domains preloaded: 52208 (complete: 131120)
Agood: All ip addresses are public addresses
Warning: Only one ip address found: mail.estudosnacionais.com has only one ip address.
Warning: No ipv6 address found. Ipv6 is the future with a lot of new features. So every domain name should have an ipv6 address. See https://en.wikipedia.org/wiki/IPv6: mail.estudosnacionais.com has no ipv6 address.
Agood: No asked Authoritative Name Server had a timeout
ADNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
Ahttps://mail.estudosnacionais.com/ 192.99.144.235
302
https://mail.estudosnacionais.com/accounts/login/?next=/
correct redirect https to https
Agood: destination is https
Agood - only one version with Http-Status 200
Agood: one preferred version: non-www is preferred
AGood: No cookie sent via http.
Agood: every cookie sent via https is marked as secure
AGood: Every cookie has a SameSite Attribute with a correct value Strict/Lax/None
AExcellent: Main Domain is in the Google-Preload-List
AExcellent: Main Domain is in the Mozilla/Firefox-Preload-List
AHSTS-Preload-Status: Preloaded. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
AGood: All urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset)
Ahttp://mail.estudosnacionais.com/ 192.99.144.235
301
https://mail.estudosnacionais.com/
correct redirect http - https with the same domain name
Bhttps://mail.estudosnacionais.com/ 192.99.144.235
302

Missing HSTS-Header
Bhttps://mail.estudosnacionais.com/accounts/login/?next=/
200

Missing HSTS-Header
Bhttps://mail.estudosnacionais.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
404

Missing HSTS-Header
Mhttps://192.99.144.235/ 192.99.144.235
400

Misconfiguration - main pages should never send http status 400 - 499
Nhttps://192.99.144.235/ 192.99.144.235
400

Error - Certificate isn't trusted, RemoteCertificateNameMismatch
Info: Checking all ip addresses of that domain without sending the hostname only one certificate found. Checking all ip addresses and sending the hostname only one certificate found. Both certificates are the same. So that domain doesn't require Server Name Indication (SNI), it's the primary certificate of that set of ip addresses.: Domain mail.estudosnacionais.com, 1 ip addresses, 1 different http results.

2. DNS- and NameServer - Checks

AInfo:: 7 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 2 Name Servers.
AInfo:: 7 Queries complete, 7 with IPv6, 0 with IPv4.
AGood: All DNS Queries done via IPv6.
Ok (4 - 8):: An average of 3.5 queries per domain name server required to find all ip addresses of all name servers.
AInfo:: 2 different Name Servers found: arvind.ns.cloudflare.com, holly.ns.cloudflare.com, 2 Name Servers included in Delegation: arvind.ns.cloudflare.com, holly.ns.cloudflare.com, 2 Name Servers included in 1 Zone definitions: arvind.ns.cloudflare.com, holly.ns.cloudflare.com, 1 Name Servers listed in SOA.Primary: arvind.ns.cloudflare.com.
AGood: Only one SOA.Primary Name Server found.: arvind.ns.cloudflare.com.
AGood: SOA.Primary Name Server included in the delegation set.: arvind.ns.cloudflare.com.
AGood: Consistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Ordered list of name servers: arvind.ns.cloudflare.com, holly.ns.cloudflare.com
AGood: All Name Server Domain Names have a Public Suffix.
AGood: All Name Server Domain Names ending with a Public Suffix have minimal one IPv4- or IPv6 address.
AGood: All Name Server ip addresses are public.
AGood: Minimal 2 different name servers (public suffix and public ip address) found: 2 different Name Servers found
Warning: All Name Servers have the same Top Level Domain / Public Suffix. If there is a problem with that Top Level Domain, your domain may be affected. Better: Use Name Servers with different top level domains.: 2 Name Servers, 1 Top Level Domain: com
Warning: All Name Servers have the same domain name. If there is a problem with that domain name (or with the name servers of that domain name), your domain may be affected. Better: Use Name Servers with different domain names / different top level domains.: Only one domain name used: cloudflare.com
AGood: Name servers with different Country locations found: 2 Name Servers, 3 Countries: CA, CR, GB
AInfo: Ipv4-Subnet-list: 6 Name Servers, 3 different subnets (first Byte): 108., 162., 172., 3 different subnets (first two Bytes): 108.162., 162.159., 172.64., 6 different subnets (first three Bytes): 108.162.194., 108.162.195., 162.159.38., 162.159.44., 172.64.34., 172.64.35.
AGood: Name Server IPv4-addresses from different subnet found:
AInfo: IPv6-Subnet-list: 6 Name Servers with IPv6, 3 different subnets (first block): 2606:, 2803:, 2a06:, 3 different subnets (first two blocks): 2606:4700:, 2803:f800:, 2a06:98c1:, 4 different subnets (first three blocks): 2606:4700:0050:, 2606:4700:0058:, 2803:f800:0050:, 2a06:98c1:0050:, 4 different subnets (first four blocks): 2606:4700:0050:0000:, 2606:4700:0058:0000:, 2803:f800:0050:0000:, 2a06:98c1:0050:0000:
AGood: Name Server IPv6 addresses from different subnets found.
AGood: Nameserver supports TCP connections: 6 good Nameserver
AGood: Nameserver supports Echo Capitalization: 6 good Nameserver
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 6 good Nameserver
AGood: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 6 good Nameserver
Nameserver doesn't pass all EDNS-Checks: arvind.ns.cloudflare.com: OP100: no result. FLAGS: no result. V1: no result. V1OP100: no result. V1FLAGS: no result. DNSSEC: no result. V1DNSSEC: no result. NSID: no result. COOKIE: no result. CLIENTSUBNET: no result.
AGood: All SOA have the same Serial Number
Agood: CAA entries found, creating certificate is limited: comodoca.com is allowed to create certificates
Agood: CAA entries found, creating certificate is limited: digicert.com is allowed to create certificates
Agood: CAA entries found, creating certificate is limited: letsencrypt.org is allowed to create certificates
Agood: CAA entries found, creating certificate is limited: comodoca.com is allowed to create wildcard-certificates
Agood: CAA entries found, creating certificate is limited: digicert.com is allowed to create wildcard-certificates
Agood: CAA entries found, creating certificate is limited: letsencrypt.org is allowed to create wildcard-certificates

3. Content- and Performance-critical Checks

AGood: All checks /.well-known/acme-challenge/random-filename without redirects answer with the expected http status 404 - Not Found. Creating a Letsencrypt certificate via http-01 challenge should work. If it doesn't work: Check your vHost configuration (apachectl -S, httpd -S, nginx -T). Every combination of port and ServerName / ServerAlias (Apache) or Server (Nginx) must be unique. Merge duplicated entries in one vHost. If you use an IIS, extensionless files must be allowed in the /.well-known/acme-challenge subdirectory. Create a web.config in that directory. Content: <configuration><system.webServer><staticContent><mimeMap fileExtension="." mimeType="text/plain" /></staticContent></system.webServer></configuration>. If you have a redirect http ⇒ https, that's ok, Letsencrypt follows such redirects to port 80 / 443 (same or other server). There must be a certificate. But the certificate may be expired, self signed or with a not matching domain name. Checking the validation file Letsencrypt ignores such certificate errors. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
https://mail.estudosnacionais.com/accounts/login/?next=/
200

Warning: https result with status 200 and size greater then 1024 Bytes without GZip found. Add GZip support so the html content is compressed.
https://mail.estudosnacionais.com/accounts/login/?next=/
200

Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header.
https://mail.estudosnacionais.com/accounts/login/?next=/
200

Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
https://mail.estudosnacionais.com/accounts/login/?next=/
200

Warning: Https connections (Standard Port 443) found without support of the http/2 protocol via ALPN. Http/2 is the new Http-Version (old: http 1.1) with some important new features. Update your server software so http/2 is available. Only one TCP-connection per Server (that's a performance boost), Header-Compression and Server Pushs are available. Domain Sharding and Inline-CSS/Javascript shouldn't used with http/2.
https://mail.estudosnacionais.com/accounts/login/?next=/
200

Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 3 script elements without defer/async.
https://mail.estudosnacionais.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
404

Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 3 script elements without defer/async.
Warning: CSS / JavaScript found without GZip support. Send these ressources with GZip. 10 external CSS / JavaScript files without GZip found - 0 with GZip, 10 complete
AGood: All images with internal compression not sent via GZip. Images (.png, .jpg) are already compressed, so an additional GZip isn't helpful. 1 images (type image/png, image/jpg) found without additional GZip. Not required because these images are already compressed
Warning: CSS / JavaScript files with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 10 external CSS / JavaScript files without Cache-Control-Header, 0 with Cache-Control, but no max-age, 0 with Cache-Control max-age too short (minimum 7 days), 0 with Cache-Control long enough, 10 complete.
Warning: Images with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 1 image files without Cache-Control-Header, 0 with Cache-Control, but no max-age, 0 with Cache-Control max-age too short (minimum 7 days), 0 with Cache-Control long enough, 1 complete.
AGood: All checked attribute values are enclosed in quotation marks (" or ').
Wrong: img-elements without alt-attribute or empty alt-attribute found. The alt-attribute ("alternative") is required and should describe the img. So Screenreader and search engines are able to use these informations.: 1 img-elements without alt-attribute, 0 img-elements with empty alt-attribute found.
AGood: Domainname is not on the "Specially Designated Nationals And Blocked Persons List" (SDN). That's an US-list of individuals and companies owned or controlled by, or acting for or on behalf of, targeted countries. It also lists individuals, groups, and entities, such as terrorists and narcotics traffickers designated under programs that are not country-specific. Collectively, such individuals and companies are called "Specially Designated Nationals" or "SDNs." Their assets are blocked and U.S. persons are generally prohibited from dealing with them. So if a domain name is on that list, it's impossible to create a Letsencrypt certificate with that domain name. Check the list manual - https://www.treasury.gov/resource-center/sanctions/sdn-list/pages/default.aspx
https://mail.estudosnacionais.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
404
4.860 seconds
Warning: 404 needs more then one second
ADuration: 105180 milliseconds, 105.180 seconds


8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
mail.estudosnacionais.com
mail.estudosnacionais.com
443
ok
Tls12
ECDH Ephermal
256
Aes256
256
Sha384
error checking OCSP stapling
ok
mail.estudosnacionais.com
mail.estudosnacionais.com
443
ok
Tls12

ECDH Ephermal
256
Aes256
256
Sha384
error checking OCSP stapling
ok
no http/2 via ALPN 
Tls.1.2
Tls.1.1
Tls.1.0
no http/2 via ALPN
Tls.1.2
Tls.1.1
Tls.1.0
Chain (complete)
1CN=mail.estudosnacionais.com

2CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US


mail.estudosnacionais.com
192.99.144.235
443
ok
Tls12
ECDH Ephermal
256
Aes256
256
Sha384
error checking OCSP stapling
ok

mail.estudosnacionais.com
192.99.144.235
443
ok
Tls12

ECDH Ephermal
256
Aes256
256
Sha384
error checking OCSP stapling
ok
no http/2 via ALPN 
No SNI required - domain included in main certificate
Tls.1.2
Tls.1.1
Tls.1.0
no http/2 via ALPN
No SNI required - domain included in main certificate
Tls.1.2
Tls.1.1
Tls.1.0
Chain (complete)
1CN=mail.estudosnacionais.com

2CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US


192.99.144.235
192.99.144.235
443
name does not match
Tls12
ECDH Ephermal
256
Aes256
256
Sha384
error checking OCSP stapling
ok

192.99.144.235
192.99.144.235
443
name does not match
Tls12

ECDH Ephermal
256
Aes256
256
Sha384
error checking OCSP stapling
ok
no http/2 via ALPN 
Cert sent without SNI
Tls.1.2
Tls.1.1
Tls.1.0
no http/2 via ALPN
Cert sent without SNI
Tls.1.2
Tls.1.1
Tls.1.0
Chain (complete)
1CN=mail.estudosnacionais.com

2CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US


9. Certificates

1.
1.
CN=mail.estudosnacionais.com
02.09.2020
01.12.2020
expires in 71 days
mail.estudosnacionais.com - 1 entry
1.
1.
CN=mail.estudosnacionais.com
02.09.2020

01.12.2020
expires in 71 days
mail.estudosnacionais.com - 1 entry

KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:032D9D83CE84B846B240B2804D9EFD793F09
Thumbprint:0E5DB761E3BBF5E6DD94EF1E2CF2645AE9E418C6
SHA256 / Certificate:m1GxYE3WF8bxpyF5S/ZkOO9DC5KRj6L6Xc6WbVA8jo0=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):84819cc58ce116bdf066aa294d77bac96d9e24a0f40a5a8be13e378bc1be7c0f
SHA256 hex / Subject Public Key Information (SPKI):58399d5870b179cbaf8e4b3067d31a2a56127319fa2ad8e9360c0145f9972384
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://ocsp.int-x3.letsencrypt.org
OCSP - must staple:no
Certificate Transparency:yes
Enhanced Key Usage:Serverauthentifizierung (1.3.6.1.5.5.7.3.1), Clientauthentifizierung (1.3.6.1.5.5.7.3.2)


2.
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
17.03.2016
17.03.2021
expires in 177 days


2.
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
17.03.2016

17.03.2021
expires in 177 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:0A0141420000015385736A0B85ECA708
Thumbprint:E6A3B45B062D509B3382282D196EFE97D5956CCB
SHA256 / Certificate:JYR9Zo608E/dQLErawdAxWfafQJDCOtsLJb+QdneIY0=
SHA256 hex / Cert (DANE * 0 1):25847d668eb4f04fdd40b12b6b0740c567da7d024308eb6c2c96fe41d9de218d
SHA256 hex / PublicKey (DANE * 1 1):60b87575447dcba2a36b7d11ac09fb24a9db406fee12d2cc90180517616e8a18
SHA256 hex / Subject Public Key Information (SPKI):cbb93d32de628874a3ecfb92affadc97f1b795f84cc6f24221a089dee1aa25ad
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://isrg.trustid.ocsp.identrust.com
OCSP - must staple:no
Certificate Transparency:no
Enhanced Key Usage:


3.
CN=DST Root CA X3, O=Digital Signature Trust Co.
30.09.2000
30.09.2021
expires in 374 days


3.
CN=DST Root CA X3, O=Digital Signature Trust Co.
30.09.2000

30.09.2021
expires in 374 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA-1 with RSA Encryption
Serial Number:44AFB080D6A327BA893039862EF8406B
Thumbprint:DAC9024F54D8F6DF94935FB1732638CA6AD77C13
SHA256 / Certificate:BocmAzGnJAPZCfEF5pvPDTLhvSST/8bZIG0RvNZ3Bzk=
SHA256 hex / Cert (DANE * 0 1):0687260331a72403d909f105e69bcf0d32e1bd2493ffc6d9206d11bcd6770739
SHA256 hex / PublicKey (DANE * 1 1):563b3caf8cfef34c2335caf560a7a95906e8488462eb75ac59784830df9e5b2b
SHA256 hex / Subject Public Key Information (SPKI):29cc40db5e2de462a311cbbafaa1dc466960002335ecdf3317f2cd05c1d0bedf
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:
OCSP - must staple:no
Certificate Transparency:no
Enhanced Key Usage:



10. Last Certificates - Certificate Transparency Log Check

1. Source CertSpotter - active certificates (one check per day)

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0
1
1

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
1897260745
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-02 13:21:40
2020-12-01 13:21:40
mail.estudosnacionais.com - 1 entries



2. Source crt.sh - old and new certificates, sometimes very slow - only certificates with "not after" > 2019 are listed

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0 /0 new
1
7

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
3326671857
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-02 11:21:40
2020-12-01 12:21:40
mail.estudosnacionais.com
1 entries


2927961989
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-06-01 23:37:02
2020-08-30 23:37:02
mail.estudosnacionais.com
1 entries


2907954854
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-05-26 21:15:28
2020-08-24 21:15:28
mail.estudosnacionais.com
1 entries


2671113833
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-04-05 19:07:56
2020-07-04 19:07:56
estudosnacionais.com, mail.estudosnacionais.com, www.estudosnacionais.com
3 entries


2532773925
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-29 15:36:07
2020-05-29 14:36:07
estudosnacionais.com, mail.estudosnacionais.com, www.estudosnacionais.com
3 entries


2440302118
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-07 13:17:23
2020-05-07 12:17:23
estudosnacionais.com, mail.estudosnacionais.com, www.estudosnacionais.com
3 entries


2203936162
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-12-05 20:53:59
2020-03-04 20:53:59
*.estudosnacionais.com, *.mail.estudosnacionais.com, *.www.estudosnacionais.com, estudosnacionais.com
4 entries



11. Html-Content - Entries

Summary

Subresource Integrity (SRI)
DomainnameHtmlElementrel/property∑ size∑ problems∑ int.∑ ext.∑ Origin poss.∑ SRI ParseErrors∑ SRI valid∑ SRI missing
https://mail.estudosnacionais.com/accounts/login/?next=/
a

2

0


0
0
0


form

1
3,084 Bytes
0
1
0
0
0
0


img

1
13,670 Bytes
0
1
0
0
0
0


link
stylesheet
3
122,056 Bytes
0
3
0
0
0
0


link
other
1
550 Bytes
0
1
0
0
0
0


meta
other
3

0


0
0
0


script

3
132,897 Bytes
0
3
0
0
0
0

Details

DomainnameHtml-Elementname/equiv/ property/relhref/src/contentHttpStatusmsgStatus
https://mail.estudosnacionais.com/accounts/login/?next=/

a

#


1
ok








a

/accounts/password_reset/


1
ok








form
post
/accounts/login/
200

1
ok
text/html; charset=utf-8, missing X-Content-Type-Options nosniff

3084 Bytes






img
src
/sitestatic/css/modoboa.png
200

1
ok
no alt-Attributeimage/png, missing X-Content-Type-Options nosniff

No Cache-Control header
No GZip - 13670 Bytes






link
icon
/sitestatic/css/logo-icon.png
200

1
ok
image/png, missing X-Content-Type-Options nosniff

No Cache-Control header
No GZip - 550 Bytes






link
stylesheet
/sitestatic/bootstrap/dist/css/bootstrap.min.css
200

1
ok
text/css, missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip required: 121200 Bytes




local SRI possible, possible hash-values:

sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=
sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u
sha512-6MXa8B6uaO18Hid6blRMetEIoPqHf7Ux1tnyIQdpt9qI5OACx7C+O3IVTr98vwGnlcg0LOLa02i9Y1HpVhlfiw==

<link rel="stylesheet" href="/sitestatic/bootstrap/dist/css/bootstrap.min.css" crossorigin="anonymous" integrity="sha256-916EbMg70RQy9LHiGkXzG8hSg9EdNy97GazNG/aiY1w=" />



Content loaded via url("...")

../fonts/glyphicons-halflings-regular.eot1
../fonts/glyphicons-halflings-regular.eot?#iefix1
../fonts/glyphicons-halflings-regular.svg#glyphicons_halflingsregular1
../fonts/glyphicons-halflings-regular.ttf1
../fonts/glyphicons-halflings-regular.woff1
../fonts/glyphicons-halflings-regular.woff21

link
stylesheet
/sitestatic/css/login.css
200

1
ok
text/css, missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip required: 226 Bytes




local SRI possible, possible hash-values:

sha256-4OxR03+jiIMZ/3HLcLJNa6g3iywU9Qll/tppTLaihNA=
sha384-iKQIbXpeSTtaT7o254iRxCsk2oAQk3QJKu9ugb96F51UbZDvFES5YNK3RxPAi8Ao
sha512-sROTBbTm4oKp8rZbh2RZsBUpao3N2yXCiErxQPgVHewVcDKVeJHCUo1BJTI9aZrS+E/6j5rA06kbVwDaiprPHw==

<link rel="stylesheet" href="/sitestatic/css/login.css" crossorigin="anonymous" integrity="sha256-4OxR03+jiIMZ/3HLcLJNa6g3iywU9Qll/tppTLaihNA=" />




link
stylesheet
/sitestatic/css/offline.css
200

1
ok
text/css, missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip required: 630 Bytes




local SRI possible, possible hash-values:

sha256-iMK4vNeebKftUmUAJETcI1qDZhMBa7FBbptftj38gYY=
sha384-lhMiB/K0YOoBCerzDzm1rb/TF40TcH2xIH9exwI+NmMoF5DqKB2gHfM7Q0IyCZdW
sha512-p+Jcz6i5MCot9OxA65PwDolwnzFloEfACDe/PDg0YjvgElJriaeyS6Mbj4UBrjdtQsKLx32Iuoz1odry2uwwcw==

<link rel="stylesheet" href="/sitestatic/css/offline.css" crossorigin="anonymous" integrity="sha256-iMK4vNeebKftUmUAJETcI1qDZhMBa7FBbptftj38gYY=" />




meta

utf-8


1
ok








meta
X-UA-Compatible
IE=edge


1
ok








meta
viewport
width=device-width, initial-scale=1.0


1
ok








script
src
/jsi18n/
200

1
ok
Missing defer / async attribute. text/javascript; charset="utf-8", missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip required: 3223 Bytes




local SRI possible, possible hash-values:

sha256-3+LExQbqvREzyQc51vzVYR/heBiUoRmuT2dMkOkqIHo=
sha384-im1YucGiuwh3jF54aKSa1A4G+JzKlEU+CIHMj/D+yw2dIZfiB1c7ZDgmZEVO5rJZ
sha512-OHS+fjpFviDyUdpF0CpDyB94X0IggQLPF3aBxM3rAPnf7cYuxui5uxQVHw+tzPL0cCGHgzV/f11TarpumAGh7g==

<script src="/jsi18n/" crossorigin="anonymous" integrity="sha256-3+LExQbqvREzyQc51vzVYR/heBiUoRmuT2dMkOkqIHo=" />




script
src
/sitestatic/bootstrap/dist/js/bootstrap.min.js
200

1
ok
Missing defer / async attribute. application/javascript, missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip required: 37045 Bytes




local SRI possible, possible hash-values:

sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=
sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa
sha512-iztkobsvnjKfAtTNdHkGVjAYTrrtlC7mGp/54c40wowO7LhURYl3gVzzcEqGl/qKXQltJ2HwMrdLcNUdo+N/RQ==

<script src="/sitestatic/bootstrap/dist/js/bootstrap.min.js" crossorigin="anonymous" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" />




script
src
/sitestatic/jquery/jquery.min.js
200

1
ok
Missing defer / async attribute. application/javascript, missing X-Content-Type-Options nosniff

No Cache-Control - header
GZip required: 92629 Bytes




local SRI possible, possible hash-values:

sha256-wS9gmOZBqsqWxgIVgA8Y9WcQOa7PgSIX+rPA0VL2rbQ=
sha384-EaUkI/FiMJtEXWAl0dCczvbFvjfzsIF1UNKGJvu9p5JIG71Kih7/kQJvYbBL7HOn
sha512-jGR1T3dQerLCSm/IGEGbndPwzszJBlKQ5Br9vuB0Pw2iyxOy+7AK+lJcCC8eaXyz/9du+bkCy4HXxByhxkHf+w==

<script src="/sitestatic/jquery/jquery.min.js" crossorigin="anonymous" integrity="sha256-wS9gmOZBqsqWxgIVgA8Y9WcQOa7PgSIX+rPA0VL2rbQ=" />




12. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: arvind.ns.cloudflare.com, holly.ns.cloudflare.com

QNr.DomainTypeNS used
1
com
NS
l.root-servers.net (2001:500:9f::42)

Answer: a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net
2
arvind.ns.cloudflare.com
NS
a.gtld-servers.net (2001:503:a83e::2:30)

Answer: ns3.cloudflare.com, ns4.cloudflare.com, ns5.cloudflare.com, ns6.cloudflare.com, ns7.cloudflare.com

Answer: ns3.cloudflare.com
162.159.0.33, 162.159.7.226, 2400:cb00:2049:1::a29f:21, 2400:cb00:2049:1::a29f:7e2

Answer: ns4.cloudflare.com
162.159.1.33, 162.159.8.55, 2400:cb00:2049:1::a29f:121, 2400:cb00:2049:1::a29f:837

Answer: ns5.cloudflare.com
162.159.2.9, 162.159.9.55, 2400:cb00:2049:1::a29f:209, 2400:cb00:2049:1::a29f:937

Answer: ns6.cloudflare.com
162.159.3.11, 162.159.5.6, 2400:cb00:2049:1::a29f:30b, 2400:cb00:2049:1::a29f:506

Answer: ns7.cloudflare.com
162.159.4.8
3
holly.ns.cloudflare.com
NS
a.gtld-servers.net (2001:503:a83e::2:30)

Answer: ns3.cloudflare.com, ns4.cloudflare.com, ns5.cloudflare.com, ns6.cloudflare.com, ns7.cloudflare.com

Answer: ns3.cloudflare.com
162.159.0.33, 162.159.7.226, 2400:cb00:2049:1::a29f:21, 2400:cb00:2049:1::a29f:7e2

Answer: ns4.cloudflare.com
162.159.1.33, 162.159.8.55, 2400:cb00:2049:1::a29f:121, 2400:cb00:2049:1::a29f:837

Answer: ns5.cloudflare.com
162.159.2.9, 162.159.9.55, 2400:cb00:2049:1::a29f:209, 2400:cb00:2049:1::a29f:937

Answer: ns6.cloudflare.com
162.159.3.11, 162.159.5.6, 2400:cb00:2049:1::a29f:30b, 2400:cb00:2049:1::a29f:506

Answer: ns7.cloudflare.com
162.159.4.8
4
arvind.ns.cloudflare.com: 108.162.195.227, 162.159.44.227, 172.64.35.227
A
ns3.cloudflare.com (2400:cb00:2049:1::a29f:21)
5
arvind.ns.cloudflare.com: 2606:4700:58::a29f:2ce3, 2803:f800:50::6ca2:c3e3, 2a06:98c1:50::ac40:23e3
AAAA
ns3.cloudflare.com (2400:cb00:2049:1::a29f:21)
6
holly.ns.cloudflare.com: 108.162.194.133, 162.159.38.133, 172.64.34.133
A
ns3.cloudflare.com (2400:cb00:2049:1::a29f:21)
7
holly.ns.cloudflare.com: 2606:4700:50::a29f:2685, 2803:f800:50::6ca2:c285, 2a06:98c1:50::ac40:2285
AAAA
ns3.cloudflare.com (2400:cb00:2049:1::a29f:21)


13. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
mail.estudosnacionais.com
0

no CAA entry found
1
0
estudosnacionais.com
5
issue
comodoca.com
1
0

9
issuewild
comodoca.com
1
0

5
issue
digicert.com
1
0

9
issuewild
digicert.com
1
0

5
issue
letsencrypt.org
1
0

9
issuewild
letsencrypt.org
1
0
com
0

no CAA entry found
1
0


14. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
estudosnacionais.com
v=spf1 a mx include:mx.ovh.com ~all
ok
1
0
mail.estudosnacionais.com

ok
1
0
_acme-challenge.mail.estudosnacionais.com

Name Error - The domain name does not exist
1
0
_acme-challenge.mail.estudosnacionais.com.estudosnacionais.com

Name Error - The domain name does not exist
1
0
_acme-challenge.mail.estudosnacionais.com.mail.estudosnacionais.com

Name Error - The domain name does not exist
1
0


15. Portchecks

Domain or IPPortDescriptionResultAnswer
mail.estudosnacionais.com
21
FTP



mail.estudosnacionais.com
21
FTP



mail.estudosnacionais.com
22
SSH
open
SSH-2.0-OpenSSH_7.4

mail.estudosnacionais.com
22
SSH
open
SSH-2.0-OpenSSH_7.4

mail.estudosnacionais.com
25
SMTP
open
220-Welcome, please wait...

mail.estudosnacionais.com
25
SMTP
open
220-Welcome, please wait...

mail.estudosnacionais.com
53
DNS



mail.estudosnacionais.com
53
DNS



mail.estudosnacionais.com
110
POP3



mail.estudosnacionais.com
110
POP3



mail.estudosnacionais.com
143
IMAP
open
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS LOGINDISABLED] Dovecot ready.

mail.estudosnacionais.com
143
IMAP
open
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS LOGINDISABLED] Dovecot ready.

mail.estudosnacionais.com
465
SMTP (encrypted)



mail.estudosnacionais.com
465
SMTP (encrypted)



mail.estudosnacionais.com
587
SMTP (encrypted, submission)
open
220 mail.estudosnacionais.com ESMTP

mail.estudosnacionais.com
587
SMTP (encrypted, submission)
open
220 mail.estudosnacionais.com ESMTP

mail.estudosnacionais.com
993
IMAP (encrypted)
open


mail.estudosnacionais.com
993
IMAP (encrypted)
open


mail.estudosnacionais.com
995
POP3 (encrypted)



mail.estudosnacionais.com
995
POP3 (encrypted)



mail.estudosnacionais.com
1433
MS SQL



mail.estudosnacionais.com
1433
MS SQL



mail.estudosnacionais.com
2082
cPanel (http)



mail.estudosnacionais.com
2082
cPanel (http)



mail.estudosnacionais.com
2083
cPanel (https)



mail.estudosnacionais.com
2083
cPanel (https)



mail.estudosnacionais.com
2086
WHM (http)



mail.estudosnacionais.com
2086
WHM (http)



mail.estudosnacionais.com
2087
WHM (https)



mail.estudosnacionais.com
2087
WHM (https)



mail.estudosnacionais.com
2089
cPanel Licensing



mail.estudosnacionais.com
2089
cPanel Licensing



mail.estudosnacionais.com
2095
cPanel Webmail (http)



mail.estudosnacionais.com
2095
cPanel Webmail (http)



mail.estudosnacionais.com
2096
cPanel Webmail (https)



mail.estudosnacionais.com
2096
cPanel Webmail (https)



mail.estudosnacionais.com
2222
DirectAdmin (http)



mail.estudosnacionais.com
2222
DirectAdmin (http)



mail.estudosnacionais.com
2222
DirectAdmin (https)



mail.estudosnacionais.com
2222
DirectAdmin (https)



mail.estudosnacionais.com
3306
mySql



mail.estudosnacionais.com
3306
mySql



mail.estudosnacionais.com
5224
Plesk Licensing



mail.estudosnacionais.com
5224
Plesk Licensing



mail.estudosnacionais.com
5432
PostgreSQL



mail.estudosnacionais.com
5432
PostgreSQL



mail.estudosnacionais.com
8080
Ookla Speedtest (http)



mail.estudosnacionais.com
8080
Ookla Speedtest (http)



mail.estudosnacionais.com
8080
Ookla Speedtest (https)



mail.estudosnacionais.com
8080
Ookla Speedtest (https)



mail.estudosnacionais.com
8083
VestaCP http



mail.estudosnacionais.com
8083
VestaCP http



mail.estudosnacionais.com
8083
VestaCP https



mail.estudosnacionais.com
8083
VestaCP https



mail.estudosnacionais.com
8443
Plesk Administration (https)



mail.estudosnacionais.com
8443
Plesk Administration (https)



mail.estudosnacionais.com
8447
Plesk Installer + Updates



mail.estudosnacionais.com
8447
Plesk Installer + Updates



mail.estudosnacionais.com
8880
Plesk Administration (http)



mail.estudosnacionais.com
8880
Plesk Administration (http)



mail.estudosnacionais.com
10000
Webmin (http)



mail.estudosnacionais.com
10000
Webmin (http)



mail.estudosnacionais.com
10000
Webmin (https)



mail.estudosnacionais.com
10000
Webmin (https)



192.99.144.235
21
FTP



192.99.144.235
21
FTP



192.99.144.235
22
SSH
open
SSH-2.0-OpenSSH_7.4

192.99.144.235
22
SSH
open
SSH-2.0-OpenSSH_7.4

192.99.144.235
25
SMTP
open
220-Welcome, please wait...

192.99.144.235
25
SMTP
open
220-Welcome, please wait...

192.99.144.235
53
DNS



192.99.144.235
53
DNS



192.99.144.235
110
POP3



192.99.144.235
110
POP3



192.99.144.235
143
IMAP
open
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS LOGINDISABLED] Dovecot ready.

192.99.144.235
143
IMAP
open
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS LOGINDISABLED] Dovecot ready.

192.99.144.235
465
SMTP (encrypted)



192.99.144.235
465
SMTP (encrypted)



192.99.144.235
587
SMTP (encrypted, submission)
open
220 mail.estudosnacionais.com ESMTP

192.99.144.235
587
SMTP (encrypted, submission)
open
220 mail.estudosnacionais.com ESMTP

192.99.144.235
993
IMAP (encrypted)
open


192.99.144.235
993
IMAP (encrypted)
open


192.99.144.235
995
POP3 (encrypted)



192.99.144.235
995
POP3 (encrypted)



192.99.144.235
1433
MS SQL



192.99.144.235
1433
MS SQL



192.99.144.235
2082
cPanel (http)



192.99.144.235
2082
cPanel (http)



192.99.144.235
2083
cPanel (https)



192.99.144.235
2083
cPanel (https)



192.99.144.235
2086
WHM (http)



192.99.144.235
2086
WHM (http)



192.99.144.235
2087
WHM (https)



192.99.144.235
2087
WHM (https)



192.99.144.235
2089
cPanel Licensing



192.99.144.235
2089
cPanel Licensing



192.99.144.235
2095
cPanel Webmail (http)



192.99.144.235
2095
cPanel Webmail (http)



192.99.144.235
2096
cPanel Webmail (https)



192.99.144.235
2096
cPanel Webmail (https)



192.99.144.235
2222
DirectAdmin (http)



192.99.144.235
2222
DirectAdmin (http)



192.99.144.235
2222
DirectAdmin (https)



192.99.144.235
2222
DirectAdmin (https)



192.99.144.235
3306
mySql



192.99.144.235
3306
mySql



192.99.144.235
5224
Plesk Licensing



192.99.144.235
5224
Plesk Licensing



192.99.144.235
5432
PostgreSQL



192.99.144.235
5432
PostgreSQL



192.99.144.235
8080
Ookla Speedtest (http)



192.99.144.235
8080
Ookla Speedtest (http)



192.99.144.235
8080
Ookla Speedtest (https)



192.99.144.235
8080
Ookla Speedtest (https)



192.99.144.235
8083
VestaCP http



192.99.144.235
8083
VestaCP http



192.99.144.235
8083
VestaCP https



192.99.144.235
8083
VestaCP https



192.99.144.235
8443
Plesk Administration (https)



192.99.144.235
8443
Plesk Administration (https)



192.99.144.235
8447
Plesk Installer + Updates



192.99.144.235
8447
Plesk Installer + Updates



192.99.144.235
8880
Plesk Administration (http)



192.99.144.235
8880
Plesk Administration (http)



192.99.144.235
10000
Webmin (http)



192.99.144.235
10000
Webmin (http)



192.99.144.235
10000
Webmin (https)



192.99.144.235
10000
Webmin (https)





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