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




V

Connect failure - perhaps firewall

Checked:
13.08.2019 16:16:17


Older results


1. IP-Addresses

HostTIP-Addressis auth.∑ Queries∑ Timeout
crowd35.itatti.harvard.edu
A
34.250.125.236
Dublin/Leinster/Ireland (IE) - Amazon Technologies Inc.
Hostname: ec2-34-250-125-236.eu-west-1.compute.amazonaws.com
yes
1
0

AAAA

yes


www.crowd35.itatti.harvard.edu

Name Error
yes
1
0


2. DNSSEC

Zone (*)DNSSEC - Informations (beta)

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



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 59944, Flags 256



1 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 31.08.2019, 00:00:00, Signature-Inception: 10.08.2019, 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: edu
edu
1 DS RR in the parent zone found



1 RRSIG RR to validate DS RR found



Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 26.08.2019, 05:00:00, Signature-Inception: 13.08.2019, 04:00:00, KeyTag 59944, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 59944 used to validate the DS RRSet in the parent zone



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 28065, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 8, KeyTag 44132, Flags 256



1 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 23.08.2019, 18:53:03, Signature-Inception: 08.08.2019, 18:48:03, KeyTag 28065, Signer-Name: edu



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 28065 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 28065, DigestType 2 and Digest "QXJJbN6FU05REpBANVvQSx/P666Zbf3eZSAG9viyznY=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: harvard.edu
harvard.edu
0 DS RR in the parent zone found



DS-Query in the parent zone has a valid NSEC3 RR as result with the hashed domain name between the hashed NSEC3-owner and the hashed NextOwner. So the parent zone confirmes the non-existence of a DS RR.



0 DNSKEY RR found





Zone: itatti.harvard.edu
itatti.harvard.edu
0 DS RR in the parent zone found



0 DNSKEY RR found





Zone: crowd35.itatti.harvard.edu
crowd35.itatti.harvard.edu
0 DS RR in the parent zone found



0 DNSKEY RR found





Zone: www.crowd35.itatti.harvard.edu
www.crowd35.itatti.harvard.edu
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.crowd35.itatti.harvard.edu
  int-dns-2.harvard.edu

crowd35.itatti.harvard.edu
  int-dns-2.harvard.edu

itatti.harvard.edu
  ext-dns-1.harvard.edu


  ext-dns-2.harvard.edu

harvard.edu
  ext-dns-1.harvard.edu


  ext-dns-2.harvard.edu

edu
  a.edu-servers.net


  b.edu-servers.net


  c.edu-servers.net


  d.edu-servers.net


  e.edu-servers.net


  f.edu-servers.net


  g.edu-servers.net


  h.edu-servers.net


  i.edu-servers.net


  j.edu-servers.net


  k.edu-servers.net


  l.edu-servers.net


  m.edu-servers.net


4. SOA-Entries


Domain:edu
Primary:a.edu-servers.net
Mail:nstld.verisign-grs.com
Serial:1565705760
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:10


Domain:edu
Primary:a.edu-servers.net
Mail:nstld.verisign-grs.com
Serial:1565705775
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:3


Domain:harvard.edu
Primary:int-dns-2.harvard.edu
Mail:netmanager.harvard.edu
Serial:2010092548
Refresh:10800
Retry:3600
Expire:2419200
TTL:3600
num Entries:2


Domain:itatti.harvard.edu
Primary:int-dns-2.harvard.edu
Mail:netmanager.harvard.edu
Serial:368
Refresh:10800
Retry:3600
Expire:2419200
TTL:3600
num Entries:2


5. Url-Checks


:

:
Domainname Http-StatusredirectSec.G
• http://crowd35.itatti.harvard.edu/
34.250.125.236
200

0.077
H
Accept-Ranges: bytes
ETag: W/"4242-1562229665000"
Last-Modified: Thu, 04 Jul 2019 08:41:05 GMT
Content-Type: text/html
Content-Length: 4242
Vary: Accept-Encoding
Date: Tue, 13 Aug 2019 14:17:06 GMT
Connection: close

• https://crowd35.itatti.harvard.edu/
34.250.125.236
-2

1.103
V
ConnectFailure - Unable to connect to the remote server No connection could be made because the target machine actively refused it 34.250.125.236:443

• http://crowd35.itatti.harvard.edu/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
34.250.125.236
404

0.073
A
Not Found
Visible Content:
Content-Type: text/html;charset=utf-8
Content-Language: en
Content-Length: 1151
Date: Tue, 13 Aug 2019 14:17:07 GMT
Connection: close

6. Comments (GZip / Html minfied / Cache-Control is beta)

Aname "crowd35.itatti.harvard.edu" is subdomain, public suffix is "edu", top-level-domain-type is "sponsored", tld-manager is "EDUCAUSE"
Agood: All ip addresses are public addresses
Agood: No asked Authoritative Name Server had a timeout
ADNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
Agood - only one version with Http-Status 200
AGood: Some urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset):1 complete Content-Type - header (2 urls)
http://crowd35.itatti.harvard.edu/ 34.250.125.236


Url with incomplete Content-Type - header - missing charset
Hfatal error: No https - result with http-status 200, no encryption
HFatal error: http result with http-status 200, no encryption. Add a redirect http ⇒ https, so every connection is secure. Perhaps in your port 80 vHost something like "RewriteEngine on" + "RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]" (two rows, without the "). Don't add this in your port 443 vHost, that would create a loop.
Vhttps://crowd35.itatti.harvard.edu/ 34.250.125.236
-2

connect failure - perhaps firewall
AGood: Nameserver supports TCP connections: 2 good Nameserver
AGood: Nameserver supports Echo Capitalization: 2 good Nameserver
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 2 good Nameserver
Nameserver doesn't pass all EDNS-Checks: int-dns-2.harvard.edu: 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.
Nameserver doesn't pass all EDNS-Checks: int-dns-2.harvard.edu: 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
Warning: No CAA entry with issue/issuewild found, every CAA can create a certificate. Read https://en.wikipedia.org/wiki/DNS_Certification_Authority_Authorization to learn some basics about the idea of CAA. Your name server must support such an entry. Not all dns providers support CAA entries.
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.
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
ADuration: 50820 milliseconds, 50.820 seconds


7. Connections (http/2- and additional Tls.1.0/1.1/1.2 checks are BETA)

No connection informations found. Perhaps only http - connections.


8. Certificates

No certificate informations found. Perhaps only http - connections.


9. Last Certificates - Certificate Transparency Log Check

1. Source CertSpotter - active certificates

No CertSpotter - CT-Log entries found


2. Source crt.sh - old and new certificates, sometimes very slow (currently no newer certificates - read Crt.sh has stopped - Letsencrypt-forum - may work next week again - 2019-12-02 - but I must check the code).

Issuerlast 7 daysactivenum Certs
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
0
5
9
CN=InCommon Server CA, OU=InCommon, O=Internet2, C=US
0
0
3

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
1195338188
leaf cert
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
2019-02-11 23:00:00
2020-02-12 22:59:59
*.itatti.harvard.edu
1 entries


940777098
precert
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
2018-11-11 23:00:00
2020-11-11 22:59:59
*.atlas.itatti.harvard.edu, *.community.itatti.harvard.edu, *.dev.itatti.harvard.edu, *.itatti.harvard.edu, *.itfa.itatti.harvard.edu, *.minos.itatti.harvard.edu, *.profile.itatti.harvard.edu, *.sites.itatti.harvard.edu, *.stage.itatti.harvard.edu, itatti.harvard.edu
10 entries


940997352
precert
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
2018-11-11 23:00:00
2020-11-11 22:59:59
*.atlas.itatti.harvard.edu, *.community.itatti.harvard.edu, *.housing.itatti.harvard.edu, *.itatti.harvard.edu, *.minos.itatti.harvard.edu, *.profile.itatti.harvard.edu, *.reports.itatti.harvard.edu, *.sites.itatti.harvard.edu, itatti.harvard.edu
9 entries


307814788
leaf cert
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
2017-10-15 22:00:00
2020-10-15 21:59:59
*.itatti.harvard.edu, collection.itatti.harvard.edu, data.itatti.harvard.edu
3 entries


211139939
leaf cert
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
2017-09-12 22:00:00
2020-09-12 21:59:59
*.atlas.itatti.harvard.edu, *.community.itatti.harvard.edu, *.dev.itatti.harvard.edu, *.itatti.harvard.edu, *.itfa.itatti.harvard.edu, *.minos.itatti.harvard.edu, *.profile.itatti.harvard.edu, *.sites.itatti.harvard.edu, *.stage.itatti.harvard.edu, itatti.harvard.edu
10 entries


15371849
leaf cert
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
2016-03-02 23:00:00
2019-03-03 22:59:59
*.itatti.harvard.edu
1 entries


10708159
leaf cert
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
2015-11-12 23:00:00
2018-11-12 22:59:59
*.atlas.itatti.harvard.edu, *.community.itatti.harvard.edu, *.dev.itatti.harvard.edu, *.itatti.harvard.edu, *.itfa.itatti.harvard.edu, *.minos.itatti.harvard.edu, *.profile.itatti.harvard.edu, *.sites.itatti.harvard.edu, *.stage.itatti.harvard.edu, itatti.harvard.edu
10 entries


370245142
leaf cert
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
2015-07-08 22:00:00
2018-07-08 21:59:59
*.itatti.harvard.edu
1 entries


8409636
leaf cert
CN=InCommon RSA Server CA, OU=InCommon, O=Internet2, L=Ann Arbor, C=US, ST=MI
2015-07-08 22:00:00
2018-07-08 21:59:59
*.itatti.harvard.edu
1 entries


6107913
leaf cert
CN=InCommon Server CA, OU=InCommon, O=Internet2, C=US
2014-12-06 23:00:00
2015-12-07 22:59:59
*.itatti.harvard.edu
1 entries


13924136
leaf cert
CN=InCommon Server CA, OU=InCommon, O=Internet2, C=US
2014-04-27 22:00:00
2017-04-27 21:59:59
*.itatti.harvard.edu
1 entries


3744632
leaf cert
CN=InCommon Server CA, OU=InCommon, O=Internet2, C=US
2014-04-02 22:00:00
2017-04-02 21:59:59
*.itatti.harvard.edu
1 entries



10. Html-Content - Entries

No Html-Content entries found. Only checked if https + status 200/401/403/404


11. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
crowd35.itatti.harvard.edu
0

no CAA entry found
1
0
itatti.harvard.edu
0

no CAA entry found
1
0
harvard.edu
0

no CAA entry found
1
0
edu
0

no CAA entry found
1
0


12. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
itatti.harvard.edu
have-i-been-pwned-verification=729fb8b2151a466866a590d23d6646e1
ok
1
0
itatti.harvard.edu
v=spf1 include:spf.protection.outlook.com -all
ok
1
0
crowd35.itatti.harvard.edu

ok
1
0
_acme-challenge.crowd35.itatti.harvard.edu

Name Error - The domain name does not exist
1
0
_acme-challenge.crowd35.itatti.harvard.edu.itatti.harvard.edu

Name Error - The domain name does not exist
1
0
_acme-challenge.crowd35.itatti.harvard.edu.crowd35.itatti.harvard.edu

Name Error - The domain name does not exist
1
0


13. Portchecks (BETA)

Domain or IPPortDescriptionResultAnswer
crowd35.itatti.harvard.edu
21
FTP



crowd35.itatti.harvard.edu
21
FTP



crowd35.itatti.harvard.edu
22
SSH
open
SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3

crowd35.itatti.harvard.edu
22
SSH
open
SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3

crowd35.itatti.harvard.edu
25
SMTP



crowd35.itatti.harvard.edu
25
SMTP



crowd35.itatti.harvard.edu
53
DNS



crowd35.itatti.harvard.edu
53
DNS



crowd35.itatti.harvard.edu
110
POP3



crowd35.itatti.harvard.edu
110
POP3



crowd35.itatti.harvard.edu
143
IMAP



crowd35.itatti.harvard.edu
143
IMAP



crowd35.itatti.harvard.edu
465
SMTP (encrypted)



crowd35.itatti.harvard.edu
465
SMTP (encrypted)



crowd35.itatti.harvard.edu
587
SMTP (encrypted, submission)



crowd35.itatti.harvard.edu
587
SMTP (encrypted, submission)



crowd35.itatti.harvard.edu
993
IMAP (encrypted)



crowd35.itatti.harvard.edu
993
IMAP (encrypted)



crowd35.itatti.harvard.edu
995
POP3 (encrypted)



crowd35.itatti.harvard.edu
995
POP3 (encrypted)



crowd35.itatti.harvard.edu
1433
MS SQL



crowd35.itatti.harvard.edu
1433
MS SQL



crowd35.itatti.harvard.edu
2082
cPanel (http)



crowd35.itatti.harvard.edu
2082
cPanel (http)



crowd35.itatti.harvard.edu
2083
cPanel (https)



crowd35.itatti.harvard.edu
2083
cPanel (https)



crowd35.itatti.harvard.edu
2086
WHM (http)



crowd35.itatti.harvard.edu
2086
WHM (http)



crowd35.itatti.harvard.edu
2087
WHM (https)



crowd35.itatti.harvard.edu
2087
WHM (https)



crowd35.itatti.harvard.edu
2089
cPanel Licensing



crowd35.itatti.harvard.edu
2089
cPanel Licensing



crowd35.itatti.harvard.edu
2095
cPanel Webmail (http)



crowd35.itatti.harvard.edu
2095
cPanel Webmail (http)



crowd35.itatti.harvard.edu
2096
cPanel Webmail (https)



crowd35.itatti.harvard.edu
2096
cPanel Webmail (https)



crowd35.itatti.harvard.edu
3306
mySql



crowd35.itatti.harvard.edu
3306
mySql



crowd35.itatti.harvard.edu
5224
Plesk Licensing



crowd35.itatti.harvard.edu
5224
Plesk Licensing



crowd35.itatti.harvard.edu
5432
PostgreSQL



crowd35.itatti.harvard.edu
5432
PostgreSQL



crowd35.itatti.harvard.edu
8080
Ookla Speedtest (http)



crowd35.itatti.harvard.edu
8080
Ookla Speedtest (http)



crowd35.itatti.harvard.edu
8080
Ookla Speedtest (https)



crowd35.itatti.harvard.edu
8080
Ookla Speedtest (https)



crowd35.itatti.harvard.edu
8083
VestaCP http



crowd35.itatti.harvard.edu
8083
VestaCP http



crowd35.itatti.harvard.edu
8083
VestaCP https



crowd35.itatti.harvard.edu
8083
VestaCP https



crowd35.itatti.harvard.edu
8443
Plesk Administration (https)



crowd35.itatti.harvard.edu
8443
Plesk Administration (https)



crowd35.itatti.harvard.edu
8447
Plesk Installer + Updates



crowd35.itatti.harvard.edu
8447
Plesk Installer + Updates



crowd35.itatti.harvard.edu
8880
Plesk Administration (http)



crowd35.itatti.harvard.edu
8880
Plesk Administration (http)



crowd35.itatti.harvard.edu
10000
Webmin (http)



crowd35.itatti.harvard.edu
10000
Webmin (http)



crowd35.itatti.harvard.edu
10000
Webmin (https)



crowd35.itatti.harvard.edu
10000
Webmin (https)



34.250.125.236
21
FTP



34.250.125.236
21
FTP



34.250.125.236
22
SSH
open
SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3

34.250.125.236
22
SSH
open
SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3

34.250.125.236
25
SMTP



34.250.125.236
25
SMTP



34.250.125.236
53
DNS



34.250.125.236
53
DNS



34.250.125.236
110
POP3



34.250.125.236
110
POP3



34.250.125.236
143
IMAP



34.250.125.236
143
IMAP



34.250.125.236
465
SMTP (encrypted)



34.250.125.236
465
SMTP (encrypted)



34.250.125.236
587
SMTP (encrypted, submission)



34.250.125.236
587
SMTP (encrypted, submission)



34.250.125.236
993
IMAP (encrypted)



34.250.125.236
993
IMAP (encrypted)



34.250.125.236
995
POP3 (encrypted)



34.250.125.236
995
POP3 (encrypted)



34.250.125.236
1433
MS SQL



34.250.125.236
1433
MS SQL



34.250.125.236
2082
cPanel (http)



34.250.125.236
2082
cPanel (http)



34.250.125.236
2083
cPanel (https)



34.250.125.236
2083
cPanel (https)



34.250.125.236
2086
WHM (http)



34.250.125.236
2086
WHM (http)



34.250.125.236
2087
WHM (https)



34.250.125.236
2087
WHM (https)



34.250.125.236
2089
cPanel Licensing



34.250.125.236
2089
cPanel Licensing



34.250.125.236
2095
cPanel Webmail (http)



34.250.125.236
2095
cPanel Webmail (http)



34.250.125.236
2096
cPanel Webmail (https)



34.250.125.236
2096
cPanel Webmail (https)



34.250.125.236
3306
mySql



34.250.125.236
3306
mySql



34.250.125.236
5224
Plesk Licensing



34.250.125.236
5224
Plesk Licensing



34.250.125.236
5432
PostgreSQL



34.250.125.236
5432
PostgreSQL



34.250.125.236
8080
Ookla Speedtest (http)



34.250.125.236
8080
Ookla Speedtest (http)



34.250.125.236
8080
Ookla Speedtest (https)



34.250.125.236
8080
Ookla Speedtest (https)



34.250.125.236
8083
VestaCP http



34.250.125.236
8083
VestaCP http



34.250.125.236
8083
VestaCP https



34.250.125.236
8083
VestaCP https



34.250.125.236
8443
Plesk Administration (https)



34.250.125.236
8443
Plesk Administration (https)



34.250.125.236
8447
Plesk Installer + Updates



34.250.125.236
8447
Plesk Installer + Updates



34.250.125.236
8880
Plesk Administration (http)



34.250.125.236
8880
Plesk Administration (http)



34.250.125.236
10000
Webmin (http)



34.250.125.236
10000
Webmin (http)



34.250.125.236
10000
Webmin (https)



34.250.125.236
10000
Webmin (https)





Permalink: https://check-your-website.server-daten.de/?i=0f3da187-5476-4724-ad04-f45797b864c9


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