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


 

 

 

1. IP-Addresses

HostTypeIP-Addressis auth.∑ Queries∑ Timeout
telk.kr
A
121.141.46.84
Seoul/South Korea (KR) - Korea Telecom
No Hostname found
yes
2
0

AAAA

yes


www.telk.kr
CNAME
telk.kr
yes
1
0

A
121.141.46.84
Seoul/South Korea (KR) - Korea Telecom
No Hostname found
yes


*.telk.kr
A
121.141.46.84
yes



AAAA

yes



CNAME

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






3 DNSKEY RR found






Public Key with Algorithm 8, KeyTag 14631, Flags 256






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






Public Key with Algorithm 8, KeyTag 26838, Flags 256






1 RRSIG RR to validate DNSKEY RR found






RRSIG-Owner (root), Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 22.07.2021, 00:00:00 +, Signature-Inception: 01.07.2021, 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: 15.07.2021, 05:00:00 +, Signature-Inception: 02.07.2021, 04:00:00 +, KeyTag 26838, Signer-Name: (root)






Status: Good - Algorithmus 8 and DNSKEY with KeyTag 26838 used to validate the DS RRSet in the parent zone






2 DNSKEY RR found






Public Key with Algorithm 8, KeyTag 35448, 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: 31.07.2021, 19:30:32 +, Signature-Inception: 01.07.2021, 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: telk.kr

telk.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 "b37hoi0135dqe0oa6ql9g9eake0c98fm" between the hashed NSEC3-owner "b1rhc52pummv6kb6j3atjklf1ncpre41" and the hashed NextOwner "b3h81gr0rh6lmblcjh73n9ogmc458i9q". So the parent zone confirmes the not-existence of a DS RR.
Bitmap: NS, DS, RRSIG Validated: RRSIG-Owner b1rhc52pummv6kb6j3atjklf1ncpre41.kr., Algorithm: 8, 2 Labels, original TTL: 900 sec, Signature-expiration: 31.07.2021, 19:30:32 +, Signature-Inception: 01.07.2021, 19:30:32 +, KeyTag 35448, Signer-Name: kr






DS-Query in the parent zone sends valid NSEC3 RR with the Hash "psuk0eekkgpofh0k7h82hvc8g7k6e7r0" as Owner. That's the Hash of "kr" with the NextHashedOwnerName "pt4mfnudnrrdep4266qtkpe25cg7698q". So that domain name is the Closest Encloser of "telk.kr". Opt-Out: True.
Bitmap: NS, SOA, RRSIG, DNSKEY, NSEC3PARAM Validated: RRSIG-Owner psuk0eekkgpofh0k7h82hvc8g7k6e7r0.kr., Algorithm: 8, 2 Labels, original TTL: 900 sec, Signature-expiration: 31.07.2021, 19:30:32 +, Signature-Inception: 01.07.2021, 19:30:32 +, KeyTag 35448, Signer-Name: kr






0 DNSKEY RR found









Zone: www.telk.kr

www.telk.kr
0 DS RR in the parent zone found

 

3. Name Servers

DomainNameserverNS-IP
telk.kr
  ns25.dnszi.com
58.120.225.173
Gangnam-gu/Seoul/South Korea (KR) - SK Broadband Co Ltd


  ns66.dnszi.com
27.1.16.93
Seoul/South Korea (KR) - Daou Technology


  ns71.dnszi.com
121.78.72.41
Seoul/South Korea (KR) - KINX


  ns88.dnszi.com
121.78.251.29
Seoul/South Korea (KR) - KINX


  ns9.dnszi.com
121.78.251.23
Seoul/South Korea (KR) - KINX

kr
  b.dns.kr / B006


  c.dns.kr / C011


  d.dns.kr / D126


  e.dns.kr / E126


  f.dns.kr / F002


X  g.dns.kr / G047

 

4. SOA-Entries


Domain:kr
Zone-Name:kr
Primary:g.dns.kr
Mail:domain-manager.nic.or.kr
Serial:2107020679
Refresh:3600
Retry:900
Expire:604800
TTL:900
num Entries:6


Domain:telk.kr
Zone-Name:telk.kr
Primary:ns9.dnszi.com
Mail:root.dnszi.com
Serial:2021062805
Refresh:43200
Retry:3600
Expire:1209600
TTL:7200
num Entries:5


5. Screenshots

Startaddress: https://telk.kr, address used: https://telk.kr/, Screenshot created 2021-07-02 07:32:54 +00:0

 

Mobil (412px x 732px)

 

1426 milliseconds

 

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

 

1513 milliseconds

 

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

 

2320 milliseconds

 

Screenshot Desktop - https://telk.kr/

 

Mobile- and other Chrome-Checks


widthheight
visual Viewport396732
content Size3961990

 

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 1.3, X25519, 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://telk.kr/
121.141.46.84
301
https://telk.kr/
Html is minified: 100.00 %
0.547
A
Date: Fri, 02 Jul 2021 05:31:10 GMT
Server: Apache
Location: https://telk.kr/
Content-Length: 281
Connection: close
Content-Type: text/html; charset=iso-8859-1

• http://www.telk.kr/
121.141.46.84
301
https://www.telk.kr/
Html is minified: 100.00 %
0.547
A
Date: Fri, 02 Jul 2021 05:31:10 GMT
Server: Apache
Location: https://www.telk.kr/
Content-Length: 289
Connection: close
Content-Type: text/html; charset=iso-8859-1

• https://www.telk.kr/
121.141.46.84
301
https://telk.kr/
Html is minified: 100.00 %
5.610
A
Date: Fri, 02 Jul 2021 05:31:20 GMT
Server: Apache
Strict-Transport-Security: max-age=31536000; preload; includeSubDomains
Location: https://telk.kr/
Content-Length: 286
Connection: close
Content-Type: text/html; charset=iso-8859-1

• https://telk.kr/
121.141.46.84
Inline-JavaScript (∑/total): 11/1635 Inline-CSS (∑/total): 0/0
200

Html is minified: 134.54 %
Other inline scripts (∑/total): 4/1635
6.250
A
Date: Fri, 02 Jul 2021 05:31:11 GMT
Server: Apache
Strict-Transport-Security: max-age=31536000; preload; includeSubDomains
Set-Cookie: PHPSESSID=6je5vc1nrj2qc8r5j11f9l4bnh; path=/; domain=.telk.kr; secure; SameSite=Lax
Expires: 0
Cache-Control: no-cache,must-revalidate
Pragma: no-cache
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 5930
Connection: close
Content-Type: text/html; charset=UTF-8

• http://telk.kr/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
121.141.46.84
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://telk.kr/inc/error.php?err=403
Html is minified: 100.00 %
Other inline scripts (∑/total): 0/0
0.580
A
Visible Content: Moved Permanently The document has moved here . Apache Server at telk.kr Port 80
Date: Fri, 02 Jul 2021 05:31:26 GMT
Server: Apache
Location: https://telk.kr/inc/error.php?err=403
Content-Length: 302
Connection: close
Content-Type: text/html; charset=iso-8859-1

• http://www.telk.kr/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
121.141.46.84
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://www.telk.kr/inc/error.php?err=403
Html is minified: 100.00 %
Other inline scripts (∑/total): 0/0
0.560
A
Visible Content: Moved Permanently The document has moved here . Apache Server at www.telk.kr Port 80
Date: Fri, 02 Jul 2021 05:31:26 GMT
Server: Apache
Location: https://www.telk.kr/inc/error.php?err=403
Content-Length: 310
Connection: close
Content-Type: text/html; charset=iso-8859-1

• https://www.telk.kr/inc/error.php?err=403

Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://telk.kr/inc/error.php?err=403
Html is minified: 100.00 %
Other inline scripts (∑/total): 0/0
5.873
A
Visible Content: Moved Permanently The document has moved here . Apache Server at www.telk.kr Port 443
Date: Fri, 02 Jul 2021 05:31:40 GMT
Server: Apache
Strict-Transport-Security: max-age=31536000; preload; includeSubDomains
Location: https://telk.kr/inc/error.php?err=403
Content-Length: 307
Connection: close
Content-Type: text/html; charset=iso-8859-1

• https://telk.kr/inc/error.php?err=403

Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 1/4
403

Html is minified: 396.94 %
Other inline scripts (∑/total): 0/0
5.093
M
Forbidden
Visible Content: 403 ERROR /inc/error.php?err=403 : 이 페이지에 접근할 수 없습니다. 아래의 사항을 확인하시고 다시 시도하시기 바랍니다. 서버(혹은 계정) 운영자가 본 페이지의 접근을 막은 경우 외부 링크를 타고 온 경우   정상적인 다운로드 절차를 밟으십시오. TELKLAND telk.kr · webmaster@telk.kr
Date: Fri, 02 Jul 2021 05:31:34 GMT
Server: Apache
Strict-Transport-Security: max-age=31536000; preload; includeSubDomains
Set-Cookie: PHPSESSID=o27tid9egn5dn73gfo74v5q8oo; path=/; domain=.telk.kr; secure; SameSite=Lax
Expires: 0
Cache-Control: no-cache,must-revalidate
Pragma: no-cache
Content-Length: 2465
Connection: close
Content-Type: text/html; charset=UTF-8

• https://121.141.46.84/
121.141.46.84
301
https://telk.kr/
Html is minified: 100.00 %
5.607
N
Certificate error: RemoteCertificateNameMismatch
Date: Fri, 02 Jul 2021 05:31:28 GMT
Server: Apache
Strict-Transport-Security: max-age=31536000; preload; includeSubDomains
Location: https://telk.kr/
Content-Length: 288
Connection: close
Content-Type: text/html; charset=iso-8859-1

 

7. Comments


1. General Results, most used to calculate the result

Aname "telk.kr" is domain, public suffix is ".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: 86 (complete: 151507)
AGood: All ip addresses are public addresses
Warning: Only one ip address found: telk.kr has only one ip address.
Warning: Only one ip address found: www.telk.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: telk.kr has no ipv6 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: www.telk.kr has no ipv6 address.
AGood: No asked Authoritative Name Server had a timeout
Ahttps://121.141.46.84/ 121.141.46.84
301
https://telk.kr/
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
AGood: every https has a Strict Transport Security Header
AGood: HSTS max-age is long enough, 31536000 seconds = 365 days
AGood: HSTS has includeSubdomains - directive
AGood: HSTS has preload directive
Warning: HSTS preload sent, but not in Preload-List. Never send a preload directive if you don't know what preload means. Check https://hstspreload.org/ to learn the basics about the Google-Preload list. If you send a preload directive, you should **immediately** add your domain to the HSTS preload list via https://hstspreload.org/ . If Google accepts the domain, so the status is "pending": Note that new entries are hardcoded into the Chrome source code and can take several months before they reach the stable version. So you will see this message some months. If you don't want that or if you don't understand "preload", but if you send a preload directive and if you have correct A-redirects, everybody can add your domain to that list. Then you may have problems, it's not easy to undo that. So if you don't want your domain preloaded, remove the preload directive.
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)
Ahttp://telk.kr/ 121.141.46.84
301
https://telk.kr/
Correct redirect http - https with the same domain name
Ahttp://www.telk.kr/ 121.141.46.84
301
https://www.telk.kr/
Correct redirect http - https with the same domain name
Nhttps://121.141.46.84/ 121.141.46.84
301
https://telk.kr/
Error - Certificate isn't trusted, RemoteCertificateNameMismatch
XFatal error: Nameserver doesn't support TCP connection: g.dns.kr: 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 telk.kr, 1 ip addresses, 1 different http results.
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 www.telk.kr, 1 ip addresses, 1 different http results.

2. Header-Checks


3. DNS- and NameServer - Checks

AInfo:: 16 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 5 Name Servers.
AInfo:: 16 Queries complete, 6 with IPv6, 10 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.
Ok (4 - 8):: An average of 3.2 queries per domain name server required to find all ip addresses of all name servers.
AInfo:: 5 different Name Servers found: ns25.dnszi.com, ns66.dnszi.com, ns71.dnszi.com, ns88.dnszi.com, ns9.dnszi.com, 5 Name Servers included in Delegation: ns25.dnszi.com, ns66.dnszi.com, ns71.dnszi.com, ns88.dnszi.com, ns9.dnszi.com, 5 Name Servers included in 1 Zone definitions: ns25.dnszi.com, ns66.dnszi.com, ns71.dnszi.com, ns88.dnszi.com, ns9.dnszi.com, 1 Name Servers listed in SOA.Primary: ns9.dnszi.com.
AGood: Only one SOA.Primary Name Server found.: ns9.dnszi.com.
AGood: SOA.Primary Name Server included in the delegation set.: ns9.dnszi.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: ns25.dnszi.com, ns66.dnszi.com, ns71.dnszi.com, ns88.dnszi.com, ns9.dnszi.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: 5 different Name Servers found
Warning: No Name Server IPv6 address found. IPv6 is the future, so your name servers should be visible via IPv6.: 5 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.: 5 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: dnszi.com
Warning: All Name Servers from the same Country / IP location.: 5 Name Servers, 1 Countries: KR
AInfo: Ipv4-Subnet-list: 5 Name Servers, 3 different subnets (first Byte): 121., 27., 58., 3 different subnets (first two Bytes): 121.78., 27.1., 58.120., 4 different subnets (first three Bytes): 121.78.251., 121.78.72., 27.1.16., 58.120.225.
AGood: Name Server IPv4-addresses from different subnet found:
AGood: Nameserver supports TCP connections: 5 good Nameserver
AGood: Nameserver supports Echo Capitalization: 5 good Nameserver
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 5 good Nameserver
AGood: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 5 good Nameserver
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.

4. Content- and Performance-critical Checks

https://telk.kr/inc/error.php?err=403
403

Fatal: Check of /.well-known/acme-challenge/random-filename has a http status 401 / 403 Not Allowed / Forbidden. A http status 404 - Not Found - is expected. Creating a Letsencrypt certificate via http-01 challenge may not work. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
AGood: Every https result with status 200 and greater 1024 Bytes is compressed (gzip, deflate, br checked).
https://telk.kr/ 121.141.46.84
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://telk.kr/ 121.141.46.84
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://telk.kr/ 121.141.46.84
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.
AGood: Some script Elements (type text/javascript) with a src-Attribute have a defer / async - Attribute. So loading and executing these JavaScripts doesn't block parsing and rendering the Html-Output.
https://telk.kr/ 121.141.46.84
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.: 7 script elements without defer/async.
Warning: CSS / JavaScript found without Compression. Compress these ressources, gzip, deflate, br are checked. 1 external CSS / JavaScript files without GZip found - 18 with GZip, 19 complete
AGood: All images with internal compression not compressed. Some Images (.png, .jpg, .jpeg, .webp, .gif) are already compressed, so an additional compression isn't helpful. 14 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. 14 external CSS / JavaScript files without Cache-Control-Header, 1 with Cache-Control, but no max-age, 3 with Cache-Control max-age too short (minimum 7 days), 1 with Cache-Control long enough, 19 complete.
Warning: Images with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 14 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, 14 complete.
AGood: All checked attribute values are enclosed in quotation marks (" or ').
AGood: All img-elements have a valid alt-attribute.: 14 img-elements 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
ADuration: 217254 milliseconds, 217.254 seconds

 

8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
telk.kr
121.141.46.84
443
ok
Tls12
ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
telk.kr
121.141.46.84
443
ok
Tls12

ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
no http/2 via ALPN 
No SNI required - domain included in main certificate
Tls.1.2
no Tls.1.1
no Tls.1.0
no http/2 via ALPN
No SNI required - domain included in main certificate
Tls.1.2
no Tls.1.1
no Tls.1.0
Chain - too much certificates, don't send root certificates

1CN=telk.kr


2CN=R3, O=Let's Encrypt, C=US


3CN=ISRG Root X1, O=Internet Security Research Group, C=US


www.telk.kr
121.141.46.84
443
ok
Tls12
ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok

www.telk.kr
121.141.46.84
443
ok
Tls12

ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
no http/2 via ALPN 
No SNI required - domain included in main certificate
Tls.1.2
no Tls.1.1
no Tls.1.0
no http/2 via ALPN
No SNI required - domain included in main certificate
Tls.1.2
no Tls.1.1
no Tls.1.0
Chain - too much certificates, don't send root certificates

1CN=telk.kr


2CN=R3, O=Let's Encrypt, C=US


3CN=ISRG Root X1, O=Internet Security Research Group, C=US


telk.kr
telk.kr
443
ok
Tls12
ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok

telk.kr
telk.kr
443
ok
Tls12

ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
no http/2 via ALPN 
Tls.1.2
no Tls.1.1
no Tls.1.0
no http/2 via ALPN
Tls.1.2
no Tls.1.1
no Tls.1.0
Chain - too much certificates, don't send root certificates

1CN=telk.kr


2CN=R3, O=Let's Encrypt, C=US


3CN=ISRG Root X1, O=Internet Security Research Group, C=US


www.telk.kr
www.telk.kr
443
ok
Tls12
ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok

www.telk.kr
www.telk.kr
443
ok
Tls12

ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
no http/2 via ALPN 
Tls.1.2
no Tls.1.1
no Tls.1.0
no http/2 via ALPN
Tls.1.2
no Tls.1.1
no Tls.1.0
Chain - too much certificates, don't send root certificates

1CN=telk.kr


2CN=R3, O=Let's Encrypt, C=US


3CN=ISRG Root X1, O=Internet Security Research Group, C=US


121.141.46.84
121.141.46.84
443
name does not match
Tls12
ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok

121.141.46.84
121.141.46.84
443
name does not match
Tls12

ECDH Ephermal
255
Aes128
128
Sha256
error checking OCSP stapling
ok
no http/2 via ALPN 
Cert sent without SNI
Tls.1.2
no Tls.1.1
no Tls.1.0
no http/2 via ALPN
Cert sent without SNI
Tls.1.2
no Tls.1.1
no Tls.1.0
Chain - too much certificates, don't send root certificates

1CN=telk.kr


2CN=R3, O=Let's Encrypt, C=US


3CN=ISRG Root X1, O=Internet Security Research Group, C=US

 

9. Certificates

1.
1.
CN=telk.kr
02.07.2021
30.09.2021
1232 days expired
telk.kr, wiki.telk.kr, www.telk.kr - 3 entries
1.
1.
CN=telk.kr
02.07.2021

30.09.2021
1232 days expired


telk.kr, wiki.telk.kr, www.telk.kr - 3 entries

KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:03A711C94B86AA44D7E3770A7AD37CA047B2
Thumbprint:29A7921201A6EDE27B27AC52BA12BF7ADF85C12E
SHA256 / Certificate:KoHKwpK2Zzm+ivNRgiHkIbQigIn3IXvXjyGjzZXbnGA=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):2727eaf69b34abc8c2d5d6bcdf0e2bdc00f2f4c22667a8a465f5217beece353c
SHA256 hex / Subject Public Key Information (SPKI):2727eaf69b34abc8c2d5d6bcdf0e2bdc00f2f4c22667a8a465f5217beece353c
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://r3.o.lencr.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=R3, O=Let's Encrypt, C=US
04.09.2020
15.09.2025
expires in 214 days


2.
CN=R3, O=Let's Encrypt, C=US
04.09.2020

15.09.2025
expires in 214 days




KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:00912B084ACF0C18A753F6D62E25A75F5A
Thumbprint:A053375BFE84E8B748782C7CEE15827A6AF5A405
SHA256 / Certificate:Z63RFmsCCuYbj1/JaBPATCqliZYHloZVcqPH5zdhPf0=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d
SHA256 hex / Subject Public Key Information (SPKI):8d02536c887482bc34ff54e41d2ba659bf85b341a0a20afadb5813dcfbcf286d
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Check unknown. No result 404 / 200
OCSP - Url:
OCSP - must staple:no
Certificate Transparency:no
Enhanced Key Usage:Clientauthentifizierung (1.3.6.1.5.5.7.3.2), Serverauthentifizierung (1.3.6.1.5.5.7.3.1)




3.
CN=ISRG Root X1, O=Internet Security Research Group, C=US
04.06.2015
04.06.2035
expires in 3763 days


3.
CN=ISRG Root X1, O=Internet Security Research Group, C=US
04.06.2015

04.06.2035
expires in 3763 days




KeyalgorithmRSA encryption (4096 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:008210CFB0D240E3594463E0BB63828B00
Thumbprint:CABD2A79A1076A31F21D253635CB039D4329A5E8
SHA256 / Certificate:lrzsBiZJdvN0YHeazyjFp8/oo8Cq4RqP/O4FwL3fCMY=
SHA256 hex / Cert (DANE * 0 1):96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
SHA256 hex / PublicKey (DANE * 1 1):0b9fa5a59eed715c26c1020c711b4f6ec42d58b0015e14337a39dad301c5afc3
SHA256 hex / Subject Public Key Information (SPKI):0b9fa5a59eed715c26c1020c711b4f6ec42d58b0015e14337a39dad301c5afc3
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)

Small Code Update - wait one minute

 

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

Small Code Update - wait one minute

 

11. Html-Content - Entries

Summary

No data found or small Code-update

 

Details (currently limited to 500 rows - some problems with spam users)

Small Code Update - wait one minute

 

12. Html-Parsing via https://validator.w3.org/nu/

Small Code update, wait one minute

 

13. Nameserver - IP-Adresses

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers: ns25.dnszi.com, ns66.dnszi.com, ns71.dnszi.com, ns88.dnszi.com, ns9.dnszi.com

 

QNr.DomainTypeNS used
1
com
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
2
ns25.dnszi.com
NS
e.gtld-servers.net (2001:502:1ca1::30)

Answer: ns1.dnszi.com, ns12.dnszi.com, ns35.dnszi.com, ns59.dnszi.com, ns69.dnszi.com

Answer: ns1.dnszi.com
121.78.251.19

Answer: ns12.dnszi.com
27.1.16.75

Answer: ns35.dnszi.com
58.120.225.170

Answer: ns59.dnszi.com
121.78.72.34

Answer: ns69.dnszi.com
121.78.251.25
3
ns66.dnszi.com
NS
e.gtld-servers.net (2001:502:1ca1::30)

Answer: ns1.dnszi.com, ns12.dnszi.com, ns35.dnszi.com, ns59.dnszi.com, ns69.dnszi.com

Answer: ns1.dnszi.com
121.78.251.19

Answer: ns12.dnszi.com
27.1.16.75

Answer: ns35.dnszi.com
58.120.225.170

Answer: ns59.dnszi.com
121.78.72.34

Answer: ns69.dnszi.com
121.78.251.25
4
ns71.dnszi.com
NS
e.gtld-servers.net (2001:502:1ca1::30)

Answer: ns1.dnszi.com, ns12.dnszi.com, ns35.dnszi.com, ns59.dnszi.com, ns69.dnszi.com

Answer: ns1.dnszi.com
121.78.251.19

Answer: ns12.dnszi.com
27.1.16.75

Answer: ns35.dnszi.com
58.120.225.170

Answer: ns59.dnszi.com
121.78.72.34

Answer: ns69.dnszi.com
121.78.251.25
5
ns88.dnszi.com
NS
e.gtld-servers.net (2001:502:1ca1::30)

Answer: ns1.dnszi.com, ns12.dnszi.com, ns35.dnszi.com, ns59.dnszi.com, ns69.dnszi.com

Answer: ns1.dnszi.com
121.78.251.19

Answer: ns12.dnszi.com
27.1.16.75

Answer: ns35.dnszi.com
58.120.225.170

Answer: ns59.dnszi.com
121.78.72.34

Answer: ns69.dnszi.com
121.78.251.25
6
ns9.dnszi.com
NS
e.gtld-servers.net (2001:502:1ca1::30)

Answer: ns1.dnszi.com, ns12.dnszi.com, ns35.dnszi.com, ns59.dnszi.com, ns69.dnszi.com

Answer: ns1.dnszi.com
121.78.251.19

Answer: ns12.dnszi.com
27.1.16.75

Answer: ns35.dnszi.com
58.120.225.170

Answer: ns59.dnszi.com
121.78.72.34

Answer: ns69.dnszi.com
121.78.251.25
7
ns25.dnszi.com: 58.120.225.173
A
ns1.dnszi.com (121.78.251.19)
8
ns25.dnszi.com: No AAAA record found
AAAA
ns1.dnszi.com (121.78.251.19)
9
ns66.dnszi.com: 27.1.16.93
A
ns1.dnszi.com (121.78.251.19)
10
ns66.dnszi.com: No AAAA record found
AAAA
ns1.dnszi.com (121.78.251.19)
11
ns71.dnszi.com: 121.78.72.41
A
ns1.dnszi.com (121.78.251.19)
12
ns71.dnszi.com: No AAAA record found
AAAA
ns1.dnszi.com (121.78.251.19)
13
ns88.dnszi.com: 121.78.251.29
A
ns1.dnszi.com (121.78.251.19)
14
ns88.dnszi.com: No AAAA record found
AAAA
ns1.dnszi.com (121.78.251.19)
15
ns9.dnszi.com: 121.78.251.23
A
ns1.dnszi.com (121.78.251.19)
16
ns9.dnszi.com: No AAAA record found
AAAA
ns1.dnszi.com (121.78.251.19)

 

14. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
www.telk.kr



1
0
telk.kr
0

no CAA entry found
1
0
kr
0

no CAA entry found
1
0

 

15. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
telk.kr
v=spf1 ip4:121.141.46.84 ~all
ok
1
0
www.telk.kr
v=spf1 ip4:121.141.46.84 ~all
ok
1
0
_acme-challenge.telk.kr
KAP8sEsjETSFXxxiB0MKseY1M2QJTKbTXqofCFBXlUk
looks good, correct length, correct characters
1
0
_acme-challenge.www.telk.kr

Name Error - The domain name does not exist
1
0
_acme-challenge.telk.kr.telk.kr

perhaps wrong
1
0
_acme-challenge.www.telk.kr.telk.kr

perhaps wrong
1
0
_acme-challenge.www.telk.kr.www.telk.kr

Name Error - The domain name does not exist
1
0

 

16. DomainService - Entries

No DomainServiceEntries entries found

 

 

17. Cipher Suites

No Ciphers found

 

18. Portchecks

DomainIPPortDescriptionResultAnswer
telk.kr
121.141.46.84
21
FTP



telk.kr
121.141.46.84
21
FTP



telk.kr
121.141.46.84
22
SSH



telk.kr
121.141.46.84
22
SSH



telk.kr
121.141.46.84
25
SMTP



telk.kr
121.141.46.84
25
SMTP



telk.kr
121.141.46.84
53
DNS



telk.kr
121.141.46.84
53
DNS



telk.kr
121.141.46.84
110
POP3



telk.kr
121.141.46.84
110
POP3



telk.kr
121.141.46.84
143
IMAP



telk.kr
121.141.46.84
143
IMAP



telk.kr
121.141.46.84
465
SMTP (encrypted)



telk.kr
121.141.46.84
465
SMTP (encrypted)



telk.kr
121.141.46.84
587
SMTP (encrypted, submission)



telk.kr
121.141.46.84
587
SMTP (encrypted, submission)



telk.kr
121.141.46.84
993
IMAP (encrypted)



telk.kr
121.141.46.84
993
IMAP (encrypted)



telk.kr
121.141.46.84
995
POP3 (encrypted)



telk.kr
121.141.46.84
995
POP3 (encrypted)



telk.kr
121.141.46.84
1433
MS SQL



telk.kr
121.141.46.84
1433
MS SQL



telk.kr
121.141.46.84
2082
cPanel (http)



telk.kr
121.141.46.84
2082
cPanel (http)



telk.kr
121.141.46.84
2083
cPanel (https)



telk.kr
121.141.46.84
2083
cPanel (https)



telk.kr
121.141.46.84
2086
WHM (http)



telk.kr
121.141.46.84
2086
WHM (http)



telk.kr
121.141.46.84
2087
WHM (https)



telk.kr
121.141.46.84
2087
WHM (https)



telk.kr
121.141.46.84
2089
cPanel Licensing



telk.kr
121.141.46.84
2089
cPanel Licensing



telk.kr
121.141.46.84
2095
cPanel Webmail (http)



telk.kr
121.141.46.84
2095
cPanel Webmail (http)



telk.kr
121.141.46.84
2096
cPanel Webmail (https)



telk.kr
121.141.46.84
2096
cPanel Webmail (https)



telk.kr
121.141.46.84
2222
DirectAdmin (http)



telk.kr
121.141.46.84
2222
DirectAdmin (http)



telk.kr
121.141.46.84
2222
DirectAdmin (https)



telk.kr
121.141.46.84
2222
DirectAdmin (https)



telk.kr
121.141.46.84
3306
mySql



telk.kr
121.141.46.84
3306
mySql



telk.kr
121.141.46.84
5224
Plesk Licensing



telk.kr
121.141.46.84
5224
Plesk Licensing



telk.kr
121.141.46.84
5432
PostgreSQL



telk.kr
121.141.46.84
5432
PostgreSQL



telk.kr
121.141.46.84
8080
Ookla Speedtest (http)



telk.kr
121.141.46.84
8080
Ookla Speedtest (http)



telk.kr
121.141.46.84
8080
Ookla Speedtest (https)



telk.kr
121.141.46.84
8080
Ookla Speedtest (https)



telk.kr
121.141.46.84
8083
VestaCP http



telk.kr
121.141.46.84
8083
VestaCP http



telk.kr
121.141.46.84
8083
VestaCP https



telk.kr
121.141.46.84
8083
VestaCP https



telk.kr
121.141.46.84
8443
Plesk Administration (https)



telk.kr
121.141.46.84
8443
Plesk Administration (https)



telk.kr
121.141.46.84
8447
Plesk Installer + Updates



telk.kr
121.141.46.84
8447
Plesk Installer + Updates



telk.kr
121.141.46.84
8880
Plesk Administration (http)



telk.kr
121.141.46.84
8880
Plesk Administration (http)



telk.kr
121.141.46.84
10000
Webmin (http)



telk.kr
121.141.46.84
10000
Webmin (http)



telk.kr
121.141.46.84
10000
Webmin (https)



telk.kr
121.141.46.84
10000
Webmin (https)



www.telk.kr
121.141.46.84
21
FTP



www.telk.kr
121.141.46.84
21
FTP



www.telk.kr
121.141.46.84
22
SSH



www.telk.kr
121.141.46.84
22
SSH



www.telk.kr
121.141.46.84
25
SMTP



www.telk.kr
121.141.46.84
25
SMTP



www.telk.kr
121.141.46.84
53
DNS



www.telk.kr
121.141.46.84
53
DNS



www.telk.kr
121.141.46.84
110
POP3



www.telk.kr
121.141.46.84
110
POP3



www.telk.kr
121.141.46.84
143
IMAP



www.telk.kr
121.141.46.84
143
IMAP



www.telk.kr
121.141.46.84
465
SMTP (encrypted)



www.telk.kr
121.141.46.84
465
SMTP (encrypted)



www.telk.kr
121.141.46.84
587
SMTP (encrypted, submission)



www.telk.kr
121.141.46.84
587
SMTP (encrypted, submission)



www.telk.kr
121.141.46.84
993
IMAP (encrypted)



www.telk.kr
121.141.46.84
993
IMAP (encrypted)



www.telk.kr
121.141.46.84
995
POP3 (encrypted)



www.telk.kr
121.141.46.84
995
POP3 (encrypted)



www.telk.kr
121.141.46.84
1433
MS SQL



www.telk.kr
121.141.46.84
1433
MS SQL



www.telk.kr
121.141.46.84
2082
cPanel (http)



www.telk.kr
121.141.46.84
2082
cPanel (http)



www.telk.kr
121.141.46.84
2083
cPanel (https)



www.telk.kr
121.141.46.84
2083
cPanel (https)



www.telk.kr
121.141.46.84
2086
WHM (http)



www.telk.kr
121.141.46.84
2086
WHM (http)



www.telk.kr
121.141.46.84
2087
WHM (https)



www.telk.kr
121.141.46.84
2087
WHM (https)



www.telk.kr
121.141.46.84
2089
cPanel Licensing



www.telk.kr
121.141.46.84
2089
cPanel Licensing



www.telk.kr
121.141.46.84
2095
cPanel Webmail (http)



www.telk.kr
121.141.46.84
2095
cPanel Webmail (http)



www.telk.kr
121.141.46.84
2096
cPanel Webmail (https)



www.telk.kr
121.141.46.84
2096
cPanel Webmail (https)



www.telk.kr
121.141.46.84
2222
DirectAdmin (http)



www.telk.kr
121.141.46.84
2222
DirectAdmin (http)



www.telk.kr
121.141.46.84
2222
DirectAdmin (https)



www.telk.kr
121.141.46.84
2222
DirectAdmin (https)



www.telk.kr
121.141.46.84
3306
mySql



www.telk.kr
121.141.46.84
3306
mySql



www.telk.kr
121.141.46.84
5224
Plesk Licensing



www.telk.kr
121.141.46.84
5224
Plesk Licensing



www.telk.kr
121.141.46.84
5432
PostgreSQL



www.telk.kr
121.141.46.84
5432
PostgreSQL



www.telk.kr
121.141.46.84
8080
Ookla Speedtest (http)



www.telk.kr
121.141.46.84
8080
Ookla Speedtest (http)



www.telk.kr
121.141.46.84
8080
Ookla Speedtest (https)



www.telk.kr
121.141.46.84
8080
Ookla Speedtest (https)



www.telk.kr
121.141.46.84
8083
VestaCP http



www.telk.kr
121.141.46.84
8083
VestaCP http



www.telk.kr
121.141.46.84
8083
VestaCP https



www.telk.kr
121.141.46.84
8083
VestaCP https



www.telk.kr
121.141.46.84
8443
Plesk Administration (https)



www.telk.kr
121.141.46.84
8443
Plesk Administration (https)



www.telk.kr
121.141.46.84
8447
Plesk Installer + Updates



www.telk.kr
121.141.46.84
8447
Plesk Installer + Updates



www.telk.kr
121.141.46.84
8880
Plesk Administration (http)



www.telk.kr
121.141.46.84
8880
Plesk Administration (http)



www.telk.kr
121.141.46.84
10000
Webmin (http)



www.telk.kr
121.141.46.84
10000
Webmin (http)



www.telk.kr
121.141.46.84
10000
Webmin (https)



www.telk.kr
121.141.46.84
10000
Webmin (https)



 

 

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