DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.2

keis.or.kr · 210.95.199.150:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
C=KR ST=Chungcheongbuk-do O=Korea Employment Information Service CN=*.keis.or.kr
Issuer
C=GB ST=Greater Manchester L=Salford O=Sectigo Limited CN=Sectigo RSA Organization Validation Secure Server CA
Valid from
2026-02-25T00:00:00+00:00
Expires
2027-03-28T23:59:59+00:00
Days remaining
145
Serial (hex)
6CE00658B7BC294F3B5E68153F75EF61
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.keis.or.kr, DNS:keis.or.kr

SHA-256 fingerprint

A8:45:AE:FF:C0:E4:4F:F0:4A:FB:81:23:8B:1A:CA:21:78:EB:60:DA:6E:4E:BD:9A:8A:64:14:5B:DF:DB:2E:57
Certificate extensions & PEM
authorityKeyIdentifier
17:D9:D6:25:27:67:F9:31:C2:49:43:D9:30:36:44:8C:6C:A9:4F:EB
subjectKeyIdentifier
C7:3B:01:60:70:68:AD:15:D0:90:05:F4:EB:C4:79:D4:57:62:24:8C
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.6449.1.2.1.3.4 CPS: https://sectigo.com/CPS Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.sectigo.com/SectigoRSAOrganizationValidationSecureServerCA.crl
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoRSAOrganizationValidationSecureServerCA.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:*.keis.or.kr, DNS:keis.or.kr
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Feb 25 19:01:03.279 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:38:E8:D1:F3:6D:43:B0:B9:50:6E:71:CD: 50:14:77:99:E9:CA:3A:B1:74:27:46:17:6D:CE:0B:32: E0:45:B7:AB:02:20:17:2B:4B:F2:75:07:C1:AE:8C:6C: 15:E8:C7:0D:A0:F5:70:F0:06:A6:34:D1:1E:F8:CA:6A: 9D:23:8C:E6:BA:AD Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Feb 25 19:01:03.774 2026 GMT Extensions: 00:00:05:00:02:F7:04:82 Signature : ecdsa-with-SHA256 30:46:02:21:00:D4:90:93:E6:F6:1A:36:66:BA:07:B1: D0:21:5A:4E:AC:6E:5A:7B:27:D1:A1:15:6B:A6:91:DD: B8:4A:34:5E:FF:02:21:00:F7:E5:04:52:88:44:A1:BC: 49:6B:EA:8A:11:64:E7:44:D6:65:4D:BE:33:95:F5:20: 96:F7:8B:61:53:25:B1:02 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90: 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59 Timestamp : Feb 25 19:01:03.234 2026 GMT Extensions: 00:00:05:00:00:2D:DB:C0 Signature : ecdsa-with-SHA256 30:45:02:21:00:DA:1C:01:BB:2A:F1:60:D5:E0:E9:BD: E3:0A:DC:F1:D2:8C:1A:8E:5B:64:E4:81:C5:16:15:52: 4D:5C:B6:FD:F7:02:20:5E:0D:3F:B0:EB:62:32:DA:CB: 91:20:99:CC:66:A8:51:79:63:7E:98:1B:CD:83:CD:36: 0E:1D:FC:34:C4:44:52
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-11-03T21:10:21+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=GB ST=Greater Manchester L=Salford O=Sectigo Limited CN=Sectigo RSA Organization Validation Secure Server CA
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Valid from
2018-11-02T00:00:00+00:00
Expires
2030-12-31T23:59:59+00:00
Days remaining
1519
Serial (hex)
137D539CAA7C31A9A433701968847A8D
Signature
RSA-SHA384
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

72:A3:4A:C2:B4:24:AE:D3:F6:B0:B0:47:55:B8:8C:C0:27:DC:CC:80:6F:DD:B2:2B:4C:D7:C4:77:73:97:3E:C0
Certificate extensions & PEM
authorityKeyIdentifier
53:79:BF:5A:AA:2B:4A:CF:54:80:E1:D8:9B:C0:9D:F2:B2:03:66:CB
subjectKeyIdentifier
17:D9:D6:25:27:67:F9:31:C2:49:43:D9:30:36:44:8C:6C:A9:4F:EB
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: X509v3 Any Policy Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.usertrust.com/USERTrustRSACertificationAuthority.crl
authorityInfoAccess
CA Issuers - URI:http://crt.usertrust.com/USERTrustRSAAddTrustCA.crt OCSP - URI:http://ocsp.usertrust.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Valid from
2010-02-01T00:00:00+00:00
Expires
2038-01-18T23:59:59+00:00
Days remaining
4094
Serial (hex)
01FD6D30FCA3CA51A81BBC640E35032D
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

E7:93:C9:B0:2F:D8:AA:13:E2:1C:31:22:8A:CC:B0:81:19:64:3B:74:9C:89:89:64:B1:74:6D:46:C3:D4:CB:D2
Certificate extensions & PEM
subjectKeyIdentifier
53:79:BF:5A:AA:2B:4A:CF:54:80:E1:D8:9B:C0:9D:F2:B2:03:66:CB
keyUsage
Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

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