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



X

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

Checked:
16.09.2020 06:24:10


Older results


1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
pra.anacom.co.kr
A
121.167.147.165
Songpa-dong/Seoul/South Korea (KR) - Korea Telecom
No Hostname found
yes
1
0

AAAA

yes


www.pra.anacom.co.kr

Name Error
yes
1
0
*.anacom.co.kr
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Name Error
yes


*.pra.anacom.co.kr
A
Name Error
yes



AAAA
Name Error
yes



CNAME
Fatal: DNS Timeout
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: kr
kr
1 DS RR in the parent zone found



DS with Algorithm 8, KeyTag 61615, DigestType 2 and Digest 7VcKrciHE84ndfuK/7KteC0FbqIdBnfhR/L7e/VEBNo=



1 RRSIG RR to validate DS RR found



RRSIG-Owner kr., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 28.09.2020, 21:00:00 +, Signature-Inception: 15.09.2020, 20:00:00 +, 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 26691, Flags 256



Public Key with Algorithm 8, KeyTag 61615, Flags 257 (SEP = Secure Entry Point)



1 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner kr., Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 15.10.2020, 19:30:32 +, Signature-Inception: 15.09.2020, 19:30:32 +, KeyTag 61615, Signer-Name: kr



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 61615 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 61615, DigestType 2 and Digest "7VcKrciHE84ndfuK/7KteC0FbqIdBnfhR/L7e/VEBNo=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: co.kr
co.kr
1 DS RR in the parent zone found



DS with Algorithm 8, KeyTag 24919, DigestType 2 and Digest v3Dm348nizFirw2REfZjrzYniY04CK6l01uuy3nEukY=



1 RRSIG RR to validate DS RR found



RRSIG-Owner co.kr., Algorithm: 8, 2 Labels, original TTL: 86400 sec, Signature-expiration: 15.10.2020, 19:30:32 +, Signature-Inception: 15.09.2020, 19:30:32 +, KeyTag 26691, Signer-Name: kr



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 26691 used to validate the DS RRSet in the parent zone



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 24919, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 8, KeyTag 58176, Flags 256



1 RRSIG RR to validate DNSKEY RR found



RRSIG-Owner co.kr., Algorithm: 8, 2 Labels, original TTL: 86400 sec, Signature-expiration: 15.10.2020, 19:30:10 +, Signature-Inception: 15.09.2020, 19:30:10 +, KeyTag 24919, Signer-Name: co.kr



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 24919 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 24919, DigestType 2 and Digest "v3Dm348nizFirw2REfZjrzYniY04CK6l01uuy3nEukY=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: anacom.co.kr
anacom.co.kr
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 "topgj2osqq9svighbbj2qvcc6bunfq0a" between the hashed NSEC3-owner "tob11288nbt2a7nm80147cn7bm692fch" and the hashed NextOwner "tpegb6hp2jt7st72sp47r6947oq4iqs7". So the parent zone confirmes the not-existence of a DS RR.
Bitmap: NS, DS, RRSIG Validated: RRSIG-Owner tob11288nbt2a7nm80147cn7bm692fch.co.kr., Algorithm: 8, 3 Labels, original TTL: 900 sec, Signature-expiration: 15.10.2020, 19:30:10 +, Signature-Inception: 15.09.2020, 19:30:10 +, KeyTag 58176, Signer-Name: co.kr



DS-Query in the parent zone sends valid NSEC3 RR with the Hash "u3ddjfbkoipb9s5a1ifp8mccn46s4k58" as Owner. That's the Hash of "co.kr" with the NextHashedOwnerName "u49aou1a6au9df05rkunivj43vrerk5u". So that domain name is the Closest Encloser of "anacom.co.kr". Opt-Out: True.
Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner u3ddjfbkoipb9s5a1ifp8mccn46s4k58.co.kr., Algorithm: 8, 3 Labels, original TTL: 900 sec, Signature-expiration: 15.10.2020, 19:30:10 +, Signature-Inception: 15.09.2020, 19:30:10 +, KeyTag 58176, Signer-Name: co.kr



0 DNSKEY RR found




Zone: pra.anacom.co.kr
pra.anacom.co.kr
0 DS RR in the parent zone found



0 DNSKEY RR found




Zone: www.pra.anacom.co.kr
www.pra.anacom.co.kr
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.pra.anacom.co.kr
  ns.gabia.co.kr

pra.anacom.co.kr
  ns.gabia.co.kr
211.234.118.50
Seongnam-si/Gyeonggi-do/South Korea (KR) - LG DACOM KIDC

anacom.co.kr
  ns.gabia.co.kr
211.234.118.50
Seongnam-si/Gyeonggi-do/South Korea (KR) - LG DACOM KIDC


  ns.gabia.net
110.45.166.50
Seoul/South Korea (KR) - LG DACOM Corporation


  ns1.gabia.co.kr
121.78.117.39
Seongnam-si/Gyeonggi-do/South Korea (KR) - KINX


  ns1.gabia.net
121.254.178.133
Seongnam-si/Gyeonggi-do/South Korea (KR) - LG DACOM Corporation

co.kr
  b.dns.kr / B015
210.101.60.1
Jeongeup-si/Jeollabuk-do/South Korea (KR) - Korea Internet Security Agency


  c.dns.kr / C011
210.101.61.1
Jeongeup-si/Jeollabuk-do/South Korea (KR) - Korea Internet Security Agency


  d.dns.kr / D126
203.83.159.1
Jeongeup-si/Jeollabuk-do/South Korea (KR) - Korea Internet Security Agency


 
2001:dcc:4::1
Yongsan-dong/Seoul/South Korea (KR) - KRNIC


  e.dns.kr / E122
202.30.124.100
Jeongeup-si/Jeollabuk-do/South Korea (KR) - KRNIC


 
2001:dcc:5::100
Jeongeup-si/Jeollabuk-do/South Korea (KR) - KRNIC


  f.dns.kr / F007
210.101.62.1
Jeongeup-si/Jeollabuk-do/South Korea (KR) - Korea Internet Security Agency


 
2001:dcc:6::1
Jeongeup-si/Jeollabuk-do/South Korea (KR) - KRNIC


X  g.dns.kr / G100
202.31.190.1
Jeongeup-si/Jeollabuk-do/South Korea (KR) - KRNIC


X 
2001:dc5:a::1
Jeongeup-si/Jeollabuk-do/South Korea (KR) - KRNIC

kr
  b.dns.kr / B015


  c.dns.kr / C011


  d.dns.kr / D126


  e.dns.kr / E135


  f.dns.kr / F007


  g.dns.kr / G046


4. SOA-Entries


Domain:kr
Zone-Name:kr
Primary:g.dns.kr
Mail:domain-manager.nic.or.kr
Serial:2009160646
Refresh:3600
Retry:900
Expire:604800
TTL:900
num Entries:1


Domain:kr
Zone-Name:kr
Primary:g.dns.kr
Mail:domain-manager.nic.or.kr
Serial:2009160647
Refresh:3600
Retry:900
Expire:604800
TTL:900
num Entries:5


Domain:co.kr
Zone-Name:co.kr
Primary:g.dns.kr
Mail:domain-manager.nic.or.kr
Serial:2009160682
Refresh:3600
Retry:900
Expire:604800
TTL:900
num Entries:7


Domain:co.kr
Zone-Name:co.kr
Primary:g.dns.kr
Mail:domain-manager.nic.or.kr
Serial:2009160683
Refresh:3600
Retry:900
Expire:604800
TTL:900
num Entries:3


Domain:anacom.co.kr
Zone-Name:anacom.co.kr
Primary:ns.gabia.co.kr
Mail:hosting.gabia.com
Serial:2020070212
Refresh:1800
Retry:600
Expire:1209600
TTL:86400
num Entries:4


Domain:pra.anacom.co.kr
Zone-Name:anacom.co.kr
Primary:ns.gabia.co.kr
Mail:hosting.gabia.com
Serial:2020070212
Refresh:1800
Retry:600
Expire:1209600
TTL:86400
num Entries:1


Domain:www.pra.anacom.co.kr
Zone-Name:
Primary:
Mail:
Serial:
Refresh:
Retry:
Expire:
TTL:
num Entries:1


5. Screenshots

Startaddress: https://pra.anacom.co.kr, address used: https://pra.anacom.co.kr/, Screenshot created 2020-09-16 06:28:16 +00:0

Mobil (412px x 732px)

585 milliseconds

Screenshot mobile - https://pra.anacom.co.kr/
Mobil + Landscape (732px x 412px)

614 milliseconds

Screenshot mobile landscape - https://pra.anacom.co.kr/
Screen (1280px x 1680px)

1633 milliseconds

Screenshot Desktop - https://pra.anacom.co.kr/

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://pra.anacom.co.kr/
121.167.147.165
302
https://pra.anacom.co.kr/
0.640

Date: Wed, 16 Sep 2020 04:27:36 GMT
Server: Apache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Connection: close
Content-Encoding: gzip
Vary: Accept-Encoding,X-Requested-With
Set-Cookie: ns_s=01a3255de6f80b935a5e8ae0567019e6; path=/; HttpOnly
Strict-Transport-Security: max-age=31536000
Location: https://pra.anacom.co.kr/
X-UA-Compatible: IE=edge
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Feature-Policy: accelerometer 'none'; ambient-light-sensor 'none'; autoplay 'none'; camera 'none'; encrypted-media 'none'; fullscreen 'self'; geolocation 'none'; gyroscope 'none'; magnetometer 'none'; microphone 'none'; midi 'none'; payment 'none'; picture-in-picture 'none'; speaker 'none'; sync-xhr 'none'; usb 'none'; vr 'none'
Content-Security-Policy: default-src 'self'; frame-ancestors 'self'; report-uri /csp_report;
X-Frame-Options: SAMEORIGIN
X-Robots-Tag: noindex, nofollow
Referrer-Policy: no-referrer-when-downgrade
Transfer-Encoding: chunked
Content-Type: text/html; charset=utf-8

• https://pra.anacom.co.kr/
121.167.147.165 GZip used - 38 / 18 - -111.11 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
404

Html is minified: 100.00 %
8.187
B
Not Found
small visible content (num chars: 18)
Document Not Found
Date: Wed, 16 Sep 2020 04:27:38 GMT
Server: Apache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Content-Encoding: gzip
Vary: Accept-Encoding,X-Requested-With
Set-Cookie: ns_s=27810d18048c426b869408c2b60dbe60; path=/; secure; HttpOnly
Strict-Transport-Security: max-age=31536000
X-UA-Compatible: IE=edge
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Feature-Policy: accelerometer 'none'; ambient-light-sensor 'none'; autoplay 'none'; camera 'none'; encrypted-media 'none'; fullscreen 'self'; geolocation 'none'; gyroscope 'none'; magnetometer 'none'; microphone 'none'; midi 'none'; payment 'none'; picture-in-picture 'none'; speaker 'none'; sync-xhr 'none'; usb 'none'; vr 'none'
Content-Security-Policy: default-src 'self'; frame-ancestors 'self'; report-uri /csp_report;
X-Frame-Options: SAMEORIGIN
X-Robots-Tag: noindex, nofollow
Referrer-Policy: no-referrer-when-downgrade
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=utf-8

• http://pra.anacom.co.kr/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
121.167.147.165
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
404

Html is minified: 100.00 %
0.610
A
Not Found
Visible Content: Document Not Found
Date: Wed, 16 Sep 2020 04:27:46 GMT
Server: Apache
Strict-Transport-Security: max-age=31536000
Content-Length: 18
Connection: close
Content-Type: text/html; charset=iso-8859-1

• https://121.167.147.165/
121.167.147.165 GZip used - 38 / 18 - -111.11 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
404

Html is minified: 100.00 %
7.966
N
Not Found
Certificate error: RemoteCertificateNameMismatch
small visible content (num chars: 18)
Document Not Found
Date: Wed, 16 Sep 2020 04:27:47 GMT
Server: Apache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Content-Encoding: gzip
Vary: Accept-Encoding,X-Requested-With
Set-Cookie: ns_s=e9e0dbf62dca0efc7273ebd6029db04f; path=/; secure; HttpOnly
Strict-Transport-Security: max-age=31536000
X-UA-Compatible: IE=edge
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Feature-Policy: accelerometer 'none'; ambient-light-sensor 'none'; autoplay 'none'; camera 'none'; encrypted-media 'none'; fullscreen 'self'; geolocation 'none'; gyroscope 'none'; magnetometer 'none'; microphone 'none'; midi 'none'; payment 'none'; picture-in-picture 'none'; speaker 'none'; sync-xhr 'none'; usb 'none'; vr 'none'
Content-Security-Policy: default-src 'self'; frame-ancestors 'self'; report-uri /csp_report;
X-Frame-Options: SAMEORIGIN
X-Robots-Tag: noindex, nofollow
Referrer-Policy: no-referrer-when-downgrade
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=utf-8

7. Comments


1. General Results, most used to calculate the result

Aname "pra.anacom.co.kr" is subdomain, public suffix is ".co.kr", top-level-domain is ".kr", top-level-domain-type is "country-code", Country is Korea (the Republic of), tld-manager is "Korea Internet & Security Agency (KISA)", num .kr-domains preloaded: 72 (complete: 131120)
Agood: All ip addresses are public addresses
Warning: Only one ip address found: pra.anacom.co.kr 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: pra.anacom.co.kr 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
Agood: every cookie sent via https is marked as secure
Agood: every https has a Strict Transport Security Header
Agood: HSTS max-age is long enough, 31536000 seconds = 365 days
HSTS-Preload-Status: unknown. Domain never included in the Preload-list. 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)
http://pra.anacom.co.kr/ 121.167.147.165
302
ns_s=01a3255de6f80b935a5e8ae0567019e6; path=/; HttpOnly
Fatal: Cookie sent via http. Never send Cookies / Session-Cookies via http. If a user uses an insecure WLan and if the same cookie is used to managed the authenticated session, it's possible to hack that user. Same with HttpOnly - without https that's only decorative.
Bhttp://pra.anacom.co.kr/ 121.167.147.165
302
ns_s=01a3255de6f80b935a5e8ae0567019e6; path=/; HttpOnly
Cookie without a SameSite-Attribute. Possible values are: Strict/Lax/None. Cookie may not work as expected, if "None" is wanted, but browsers use "Lax" as default value.
Bhttps://pra.anacom.co.kr/ 121.167.147.165
404
ns_s=27810d18048c426b869408c2b60dbe60; path=/; secure; HttpOnly
Cookie without a SameSite-Attribute. Possible values are: Strict/Lax/None. Cookie may not work as expected, if "None" is wanted, but browsers use "Lax" as default value.
Bhttps://121.167.147.165/ 121.167.147.165
404
ns_s=e9e0dbf62dca0efc7273ebd6029db04f; path=/; secure; HttpOnly
Cookie without a SameSite-Attribute. Possible values are: Strict/Lax/None. Cookie may not work as expected, if "None" is wanted, but browsers use "Lax" as default value.
CError - no version with Http-Status 200
Hfatal error: No https - result with http-status 200, no encryption
Mhttps://pra.anacom.co.kr/ 121.167.147.165
404

Misconfiguration - main pages should never send http status 400 - 499
Mhttps://121.167.147.165/ 121.167.147.165
404

Misconfiguration - main pages should never send http status 400 - 499
Nhttps://121.167.147.165/ 121.167.147.165
404

Error - Certificate isn't trusted, RemoteCertificateNameMismatch
XFatal error: Nameserver doesn't support TCP connection: g.dns.kr / 202.31.190.1: Fatal error (-14). Details: Unable to read data from the transport connection: Eine vorhandene Verbindung wurde vom Remotehost geschlossen. - Eine vorhandene Verbindung wurde vom Remotehost geschlossen
XFatal error: Nameserver doesn't support TCP connection: g.dns.kr / 2001:dc5:a::1: Fatal error (-14). Details: Unable to read data from the transport connection: Eine vorhandene Verbindung wurde vom Remotehost geschlossen. - Eine vorhandene Verbindung wurde vom Remotehost geschlossen
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 pra.anacom.co.kr, 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 4 Name Servers.
AInfo:: 7 Queries complete, 5 with IPv6, 2 with IPv4.
Warning: Only some DNS Queries done via ipv6. IPv6 is the future, so the name servers of your name servers should have ipv6 addresses.
AGood: Some ip addresses of name servers found with the minimum of two DNS Queries. One to find the TLD-Zone, one to ask the TLD-Zone.ns.gabia.co.kr (211.234.118.50), ns.gabia.net (110.45.166.50), ns.gabia.net (110.45.166.50), ns1.gabia.co.kr (121.78.117.39)
AGood (1 - 3.0):: An average of 1.8 queries per domain name server required to find all ip addresses of all name servers.
AInfo:: 4 different Name Servers found: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr, ns1.gabia.net, 4 Name Servers included in Delegation: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr, ns1.gabia.net, 3 Name Servers included in 1 Zone definitions: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr, 1 Name Servers listed in SOA.Primary: ns.gabia.co.kr.
AGood: Only one SOA.Primary Name Server found.: ns.gabia.co.kr.
AGood: SOA.Primary Name Server included in the delegation set.: ns.gabia.co.kr.
XFatal: Inconsistency 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.: ns.gabia.co.kr (211.234.118.50): Delegation: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr, ns1.gabia.net, Zone: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr. Name Servers defined in Delegation, missing in Zone: ns1.gabia.net.
XFatal: Inconsistency 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.: ns.gabia.net (110.45.166.50): Delegation: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr, ns1.gabia.net, Zone: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr. Name Servers defined in Delegation, missing in Zone: ns1.gabia.net.
XFatal: Inconsistency 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.: ns1.gabia.co.kr (121.78.117.39): Delegation: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr, ns1.gabia.net, Zone: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr. Name Servers defined in Delegation, missing in Zone: ns1.gabia.net.
XFatal: Inconsistency 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.: ns1.gabia.net (121.254.178.133): Delegation: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr, ns1.gabia.net, Zone: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr. Name Servers defined in Delegation, missing in Zone: ns1.gabia.net.
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: 4 different Name Servers found
Warning: No Name Server IPv6 address found. IPv6 is the future, so your name servers should be visible via IPv6.: 4 different Name Servers found
AGood: Name servers with different Top Level Domains / Public Suffix List entries found: 4 Name Servers, 2 Top Level Domains: net, co.kr
AGood: Name Servers with different domain names found.: 2 different Domains found
Warning: All Name Servers from the same Country / IP location.: 4 Name Servers, 1 Countries: KR
AInfo: Ipv4-Subnet-list: 4 Name Servers, 3 different subnets (first Byte): 110., 121., 211., 4 different subnets (first two Bytes): 110.45., 121.254., 121.78., 211.234., 4 different subnets (first three Bytes): 110.45.166., 121.254.178., 121.78.117., 211.234.118.
AGood: Name Server IPv4-addresses from different subnet found:
AGood: Nameserver supports TCP connections: 1 good Nameserver
AGood: Nameserver supports Echo Capitalization: 1 good Nameserver
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 1 good Nameserver
AGood: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 1 good Nameserver
Nameserver doesn't pass all EDNS-Checks: ns.gabia.co.kr: 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.

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.
AInfo: No img element found, no alt attribute checked
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
http://pra.anacom.co.kr/ 121.167.147.165
302

Warning: HSTS header sent via http has no effect
https://pra.anacom.co.kr/ 121.167.147.165
404
8.187 seconds
Warning: 404 needs more then one second
https://121.167.147.165/ 121.167.147.165
404
7.966 seconds
Warning: 404 needs more then one second
ADuration: 252020 milliseconds, 252.020 seconds


8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
pra.anacom.co.kr
121.167.147.165
443
ok
Tls12
ECDH Ephermal
256
Aes256
256
Sha384
error checking OCSP stapling
ok
pra.anacom.co.kr
121.167.147.165
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=pra.anacom.co.kr

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


121.167.147.165
121.167.147.165
443
name does not match
Tls12
ECDH Ephermal
256
Aes256
256
Sha384
error checking OCSP stapling
ok

121.167.147.165
121.167.147.165
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=pra.anacom.co.kr

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


9. Certificates

1.
1.
CN=pra.anacom.co.kr
14.09.2020
13.12.2020
expires in 83 days
pra.anacom.co.kr - 1 entry
1.
1.
CN=pra.anacom.co.kr
14.09.2020

13.12.2020
expires in 83 days
pra.anacom.co.kr - 1 entry

KeyalgorithmRSA encryption ( bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:037A18814ADA289DB38A73990846E490CF91
Thumbprint:B11FE12D2C2E45FB739412EEDCBCFA7970FCEDF0
SHA256 / Certificate:8pmrRbzt/i1C8GizLpwfRtluBNJWm1KdvZV9J4Npa08=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):8c2686c4551a2d41b287257ce7c513fdd76f362cc014ad58431788e0e14bcf36
SHA256 hex / Subject Public Key Information (SPKI):f5248dca2477b73e59d7f85ac90f3902d4261ea0302b48167794464491540b95
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
3
8
8

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
1927526838
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-15 06:43:19
2020-12-14 06:43:19
pra.anacom.co.kr - 1 entries
duplicate nr. 3

1927511281
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-15 06:32:10
2020-12-14 06:32:10
pra.anacom.co.kr - 1 entries
duplicate nr. 2

1927493970
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-15 06:23:33
2020-12-14 06:23:33
pra.anacom.co.kr - 1 entries
duplicate nr. 1

1925759859
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-14 10:00:21
2020-12-13 10:00:21
pra.anacom.co.kr - 1 entries


1925542409
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-14 07:35:38
2020-12-13 07:35:38
pra.anacom.co.kr - 1 entries


1884255011
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-08-28 10:17:12
2020-11-26 10:17:12
pra.anacom.co.kr - 1 entries


1726192660
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-06-29 11:47:09
2020-09-27 11:47:09
pra.anacom.co.kr - 1 entries


1726168441
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-06-29 11:32:13
2020-09-27 11:32:13
pra.anacom.co.kr - 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
3 /0 new
8
13

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
3383766536
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-15 04:43:19
2020-12-14 05:43:19
pra.anacom.co.kr
1 entries
duplicate nr. 3

3383736388
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-15 04:32:10
2020-12-14 05:32:10
pra.anacom.co.kr
1 entries
duplicate nr. 2

3383709870
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-15 04:23:33
2020-12-14 05:23:33
pra.anacom.co.kr
1 entries
duplicate nr. 1

3380363952
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-14 08:00:21
2020-12-13 09:00:21
pra.anacom.co.kr
1 entries


3379962609
precert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-09-14 05:35:38
2020-12-13 06:35:38
pra.anacom.co.kr
1 entries


3301867135
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-08-28 08:17:12
2020-11-26 09:17:12
pra.anacom.co.kr
1 entries


3015745778
precert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-06-29 09:47:09
2020-09-27 09:47:09
pra.anacom.co.kr
1 entries


3015706906
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-06-29 09:32:13
2020-09-27 09:32:13
pra.anacom.co.kr
1 entries


2971511230
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-06-16 02:06:14
2020-09-14 02:06:14
pra.anacom.co.kr
1 entries


2971477880
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-06-16 01:46:55
2020-09-14 01:46:55
pra.anacom.co.kr
1 entries


2789504786
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-04-27 04:02:18
2020-07-26 04:02:18
pra.anacom.co.kr
1 entries


2521999332
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-27 06:04:31
2020-05-27 05:04:31
pra.anacom.co.kr
1 entries


2521884361
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-27 05:44:30
2020-05-27 04:44:30
pra.anacom.co.kr
1 entries



11. Html-Content - Entries

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


12. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr, ns1.gabia.net

QNr.DomainTypeNS used
1
kr
NS
b.root-servers.net (2001:500:200::b)

Answer: b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr, f.dns.kr, g.dns.kr
2
ns.gabia.co.kr: 211.234.118.50
NS
d.dns.kr (2001:dcc:4::1)

Answer: ns1.gabia.co.kr
121.78.117.39
3
net
NS
k.root-servers.net (2001:7fd::1)

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
4
ns.gabia.net: 110.45.166.50
NS
e.gtld-servers.net (2001:502:1ca1::30)
5
ns1.gabia.net
NS
e.gtld-servers.net (2001:502:1ca1::30)

Answer: ns.gabia.co.kr, ns.gabia.net, ns1.gabia.co.kr

Answer: ns.gabia.net
110.45.166.50
6
ns1.gabia.net: 121.254.178.133
A
ns.gabia.co.kr (211.234.118.50)
7
ns1.gabia.net: No AAAA record found
AAAA
ns.gabia.co.kr (211.234.118.50)


13. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
pra.anacom.co.kr
0

no CAA entry found
1
0
anacom.co.kr
0

no CAA entry found
1
0
co.kr
0

no CAA entry found
1
0
kr
0

no CAA entry found
1
0


14. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
anacom.co.kr
v=spf1 include:spf.hiworks.co.kr ~all
ok
1
0
anacom.co.kr
v=spf1 ip4:169.56.124.10 ~all
ok
1
0
pra.anacom.co.kr

ok
1
0
_acme-challenge.pra.anacom.co.kr

Name Error - The domain name does not exist
1
0
_acme-challenge.pra.anacom.co.kr.anacom.co.kr

Name Error - The domain name does not exist
1
0
_acme-challenge.pra.anacom.co.kr.pra.anacom.co.kr

Name Error - The domain name does not exist
1
0


15. Portchecks

No Port checks



Permalink: https://check-your-website.server-daten.de/?i=73ba041e-bfc2-4dcb-afc7-b1ef806a722e


Last Result: https://check-your-website.server-daten.de/?q=pra.anacom.co.kr - 2020-09-16 06:24:10


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