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


Info: Problems with 3.048.289 Letsencrypt certificates (378.325 accounts). They must be revoked (revocation starts 2020-03-04 20:00 UTC) - see Revoking certain certificates on March 4. Update 2020-03-07: Good news: Mass-revocation is canceled.

This tool: A check (SerialNumber) is added. Letsencrypt has published a list of critical SerialNumbers, this list is checked. See the part "9. Certificates". If there is a warning, renew that certificate and replace the current certificate.




X

DNS-problem - authoritative Nameserver refused, not defined or timeout

Checked:
02.12.2019 09:17:57


Older results

No older results found


1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
sellitback.celadon.ae
A

yes
1
0

AAAA

yes


www.sellitback.celadon.ae

Name Error
yes
1
0


2. DNSSEC

Info: The Xml-split has triggered some hidden bugs. Now it looks ok.
If root or the top level zone isn't validated, it's buggy.
Both green and your domain is red -> it's your domain.

Zone (*)DNSSEC - Informations

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 22545, Flags 256



1 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 21.12.2019, 00:00:00 +, Signature-Inception: 30.11.2019, 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: ae
ae
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 "ae" and the NextOwner "aeg". So the parent zone confirmes the non-existence of a DS RR. Bitmap: NS, RRSIG, NSEC



0 DNSKEY RR found





Zone: celadon.ae
celadon.ae
0 DS RR in the parent zone found



0 DNSKEY RR found





Zone: sellitback.celadon.ae
sellitback.celadon.ae
0 DS RR in the parent zone found



0 DNSKEY RR found





Zone: www.sellitback.celadon.ae
www.sellitback.celadon.ae
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.sellitback.celadon.ae
  ns1.digitalocean.com

sellitback.celadon.ae
  ns1.digitalocean.com / 67m5
173.245.58.51
Ashburn/Virginia/United States (US) - Cloudflare, Inc.


 
2400:cb00:2049:1::adf5:3a33
Columbus/North Carolina/United States (US) - CLOUDFLARE


  ns2.digitalocean.com / 67m17
173.245.59.41
Ashburn/Virginia/United States (US) - Cloudflare, Inc.


 
2400:cb00:2049:1::adf5:3b29
Columbus/North Carolina/United States (US) - CLOUDFLARE


  ns3.digitalocean.com / 67m20
198.41.222.173
Newark/New Jersey/United States (US) - Cloudflare, Inc.


 
2400:cb00:2049:1::c629:dead
Columbus/North Carolina/United States (US) - CLOUDFLARE

celadon.ae
  ns1.hosting.reg.ru / ns17.hosting.reg.ru


  ns2.hosting.reg.ru / ns18.hosting.reg.ru

ae
  ns1.aedns.ae


  ns2.aedns.ae


  ns4.apnic.net / ns4-de1.apnic.net


  nsext-pch.aedns.ae / 4.fra.pch


  sns-pb.isc.org / pb-ams-ns2.sns.isc.org


4. SOA-Entries


Domain:ae
Zone-Name:
Primary:ns1.aedns.ae
Mail:dns.aeda.ae
Serial:2011749821
Refresh:10800
Retry:900
Expire:604800
TTL:3600
num Entries:5


Domain:celadon.ae
Zone-Name:
Primary:server167.hosting.reg.ru
Mail:support.reg.ru
Serial:2017062593
Refresh:3600
Retry:3600
Expire:604800
TTL:86400
num Entries:2


Domain:sellitback.celadon.ae
Zone-Name:
Primary:ns1.digitalocean.com
Mail:hostmaster.sellitback.celadon.ae
Serial:1575273409
Refresh:10800
Retry:3600
Expire:604800
TTL:1800
num Entries:6


Domain:www.sellitback.celadon.ae
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


5. Screenshots

No Screenshot listed, because no url-check with https + http status 200-299, 400-599 + not-ACME-check found.

6. Url-Checks

DomainnameHttp-StatusredirectSec.G







7. Comments


1. General Results, most used to calculate the result

Aname "sellitback.celadon.ae" is subdomain, public suffix is "ae", top-level-domain-type is "country-code", Country is United Arab Emirates (the), tld-manager is "Telecommunication Regulatory Authority (TRA)"
Agood: No asked Authoritative Name Server had a timeout
ADNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.

2. DNS- and NameServer - Checks

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: ns1.digitalocean.com,ns2.digitalocean.com,ns3.digitalocean.com
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: ns1.digitalocean.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.
Nameserver doesn't pass all EDNS-Checks: ns4.apnic.net: OP100: ok. FLAGS: ok. V1: ok. V1OP100: ok. V1FLAGS: ok. DNSSEC: ok. V1DNSSEC: ok. NSID: SOA expected, but NOT found, NOERR expectend and NOERR found, Version 0 expectend and found (ns4-de1.apnic.net). COOKIE: fatal timeout. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: sns-pb.isc.org: OP100: ok. FLAGS: ok. V1: ok. V1OP100: ok. V1FLAGS: ok. DNSSEC: ok. V1DNSSEC: ok. NSID: SOA expected, but NOT found, NOERR expectend and NOERR found, Version 0 expectend and found (pb-ams-ns2.sns.isc.org). COOKIE: fatal timeout. CLIENTSUBNET: ok.
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.

3. Content- and Performance-critical Checks

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: 52757 milliseconds, 52.757 seconds


8. Connections

No connection informations found. Perhaps only http - connections.


9. Certificates

No certificate informations found. Perhaps only http - connections.


10. Last Certificates - Certificate Transparency Log Check

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

No CertSpotter - CT-Log entries found


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

No CRT - CT-Log entries found


11. Html-Content - Entries

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


12. Nameserver - IP-Adresses (alpha)

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers:

No NameServer - IP address informations found. The feature is new (2020-05-07), so recheck this domain.


13. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
sellitback.celadon.ae
0

no CAA entry found
1
0
celadon.ae
0

no CAA entry found
1
0
ae
0

no CAA entry found
1
0


14. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
celadon.ae

Refused - The name server refuses to perform the specified operation for policy reasons
1
0
sellitback.celadon.ae

ok
1
0
_acme-challenge.sellitback.celadon.ae

Name Error - The domain name does not exist
1
0
_acme-challenge.sellitback.celadon.ae.celadon.ae

Refused - The name server refuses to perform the specified operation for policy reasons
1
0
_acme-challenge.sellitback.celadon.ae.sellitback.celadon.ae

Name Error - The domain name does not exist
1
0


15. Portchecks

No Port checks



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Last Result: https://check-your-website.server-daten.de/?q=sellitback.celadon.ae - 2019-12-02 09:17:57


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