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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

TLSv1.3

korea.kr · 27.101.217.76:443

Verified

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

Subject
C=KR ST=Sejong-si O=Ministry of Culture, Sports and Tourism CN=*.korea.kr
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2026-07-23T00:00:00+00:00
Expires
2027-02-06T23:59:59+00:00
Days remaining
121
Serial (hex)
092FABB42FE07F2645EF51B0335615F5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.korea.kr, DNS:korea.kr

SHA-256 fingerprint

D2:D4:EC:4D:8C:87:5B:18:57:FC:F2:04:0A:AB:E0:4C:13:4E:1F:9B:7A:1B:EE:52:3F:60:01:1F:BA:CB:13:75
Certificate extensions & PEM
authorityKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
subjectKeyIdentifier
52:A6:36:5A:94:11:3E:65:35:C6:EE:C1:70:4C:11:D7:83:C0:52:F0
subjectAltName
DNS:*.korea.kr, DNS:korea.kr
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://cdp.thawte.com/ThawteTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.thawte.com CA Issuers - URI:http://cacerts.thawte.com/ThawteTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Jul 23 00:04:10.322 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:DB:DA:AB:BB:B3:2A:E9:86:66:64:4E: 20:A8:75:90:37:A1:AC:67:12:8C:7A:B2:DB:2D:97:60: D1:28:4C:22:70:02:20:5C:F8:BF:D2:D6:90:5B:ED:F6: 3B:37:08:85:13:BC:CB:40:61:97:83:1D:BF:8A:42:9A: FB:75:DC:C5:9A:BC:15 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Jul 23 00:04:10.371 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:09:C2:17:40:A6:AA:77:DB:AC:23:B3:CB: 8A:5C:81:D4:BA:B7:50:14:E4:7E:48:85:33:D2:FE:4E: 5B:8B:CA:E2:02:20:26:B3:69:C9:44:BC:1D:72:88:85: C3:DB:BD:30:F0:C0:94:5F:6D:66:69:A6:C3:BC:B7:7C: 20:52:D9:6C:F6:5B 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 : Jul 23 00:04:10.514 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:3C:C9:B8:D6:2A:63:1A:3C:D3:6A:5B:B7: CD:22:3E:74:15:7C:4B:6C:CC:38:BC:54:A6:5C:AA:3E: 4A:A6:4B:A6:02:21:00:CA:35:9C:47:6E:76:3E:1A:D6: DA:1C:8E:63:0B:56:20:6A:45:C2:6D:16:EA:59:9A:71: C7:E1:23:BD:11:06:5F
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-08T04:20:38+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:25+00:00
Expires
2027-11-02T12:24:25+00:00
Days remaining
390
Serial (hex)
090EE8C5DE5BFA62D2AE2FF7097C4857
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4B:CC:5E:23:4F:E8:1E:DE:4E:AF:88:3A:A1:9C:31:33:5B:0B:26:E8:5E:06:6B:99:45:E4:CB:61:53:EB:20:C2
Certificate extensions & PEM
subjectKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2013-08-01T12:00:00+00:00
Expires
2038-01-15T12:00:00+00:00
Days remaining
4117
Serial (hex)
033AF1E6A711A9A0BB2864B11D09FAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:3C:CB:B7:60:31:E5:E0:13:8F:8D:D3:9A:23:F9:DE:47:FF:C3:5E:43:C1:14:4C:EA:27:D4:6A:5A:B1:CB:5F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
-----BEGIN CERTIFICATE-----
MIIDjjCCAnagAwIBAgIQAzrx5qcRqaC7KGSxHQn65TANBgkqhkiG9w0BAQsFADBh
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBH
MjAeFw0xMzA4MDExMjAwMDBaFw0zODAxMTUxMjAwMDBaMGExCzAJBgNVBAYTAlVT
MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5j
b20xIDAeBgNVBAMTF0RpZ2lDZXJ0IEdsb2JhbCBSb290IEcyMIIBIjANBgkqhkiG
9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuzfNNNx7a8myaJCtSnX/RrohCgiN9RlUyfuI
2/Ou8jqJkTx65qsGGmvPrC3oXgkkRLpimn7Wo6h+4FR1IAWsULecYxpsMNzaHxmx
1x7e/dfgy5SDN67sH0NO3Xss0r0upS/kqbitOtSZpLYl6ZtrAGCSYP9PIUkY92eQ
q2EGnI/yuum06ZIya7XzV+hdG82MHauVBJVJ8zUtluNJbd134/tJS7SsVQepj5Wz
tCO7TG1F8PapspUwtP1MVYwnSlcUfIKdzXOS0xZKBgyMUNGPHgm+F6HmIcr9g+UQ
vIOlCsRnKPZzFBQ9RnbDhxSJITRNrw9FDKZJobq7nMWxM4MphQIDAQABo0IwQDAP
BgNVHRMBAf8EBTADAQH/MA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQUTiJUIBiV
5uNu5g/6+rkS7QYXjzkwDQYJKoZIhvcNAQELBQADggEBAGBnKJRvDkhj6zHd6mcY
1Yl9PMWLSn/pvtsrF9+wX3N3KjITOYFnQoQj8kVnNeyIv/iPsGEMNKSuIEyExtv4
NeF22d+mQrvHRAiGfzZ0JFrabA0UWTW98kndth/Jsw1HKj2ZL7tcu7XUIOGZX1NG
Fdtom/DzMNU+MeKNhJ7jitralj41E6Vf8PlwUHBHQRFXGU7Aj64GxJUTFy8bJZ91
8rGOmaFvE7FBcf6IKshPECBV1/MUReXgRPTqh5Uykw7+U0b6LJ3/iyK5S9kJRaTe
pLiaWN0bfVKfjllDiIGknibVb63dDcY3fe0Dkhvld1927jyNxF1WW6LZZm6zNTfl
MrY=
-----END CERTIFICATE-----

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

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