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

TLSv1.3

handong.edu · 211.253.29.84:443

Verified

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

Subject
C=KR ST=Gyeongsangbuk-do L=Pohang-si O=Handong Global University CN=*.handong.edu
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2026-09-29T00:00:00+00:00
Expires
2027-04-14T23:59:59+00:00
Days remaining
163
Serial (hex)
02060C7F2E258D458E4B93D1F65EC9DD
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.handong.edu, DNS:handong.edu

SHA-256 fingerprint

81:E3:D9:69:67:C0:9C:BF:4C:27:14:B4:7D:20:68:26:18:37:28:69:66:11:0C:22:57:7C:94:38:09:DD:1C:4A
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
44:1B:35:7B:A8:01:18:FF:ED:43:A8:F7:2D:45:ED:4E:A6:0E:85:4E
subjectAltName
DNS:*.handong.edu, DNS:handong.edu
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 : Sep 29 01:11:25.051 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:1E:73:D0:6D:C5:97:46:B2:95:C5:DA:8B: 2F:C7:47:55:5E:27:67:28:4F:5A:B6:78:CD:F6:84:BF: CB:90:EC:A9:02:21:00:87:FB:9D:17:1E:AA:32:7D:A7: 2F:16:18:0A:0E:2B:0A:BF:16:7B:63:11:E4:44:2B:19: 59:B9:B0:51:55:D2:BC Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Sep 29 01:11:25.045 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:D4:89:CB:20:F0:71:A8:3B:5F:88:4B: 1A:1E:EB:D7:7E:1B:A7:71:F9:E4:54:C8:27:2A:57:F7: 14:89:FA:D8:5C:02:20:78:71:4D:77:92:1A:24:D1:0A: 1E:FC:77:03:7D:2E:E8:FC:26:D4:DE:3B:85:D9:7E:9D: 61:C0:7B:18:AA:51:03 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 : Sep 29 01:11:25.131 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:1C:6B:BA:D1:B8:E9:87:F6:93:5A:14:23: D2:E2:07:73:CE:22:BE:42:A3:95:69:B3:13:09:E6:54: D5:8A:D6:8F:02:21:00:DE:F7:33:82:B0:48:89:E4:ED: 9C:67:04:13:43:CD:68:80:3B:76:F1:A4:F9:DD:7A:76: 00:A8:A5:9E:93:B8:86
-----BEGIN CERTIFICATE-----
MIIGcTCCBVmgAwIBAgIQAgYMfy4ljUWOS5PR9l7J3TANBgkqhkiG9w0BAQsFADBe
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
d3cuZGlnaWNlcnQuY29tMR0wGwYDVQQDExRUaGF3dGUgVExTIFJTQSBDQSBHMTAe
Fw0yNjA5MjkwMDAwMDBaFw0yNzA0MTQyMzU5NTlaMHgxCzAJBgNVBAYTAktSMRkw
FwYDVQQIExBHeWVvbmdzYW5nYnVrLWRvMRIwEAYDVQQHEwlQb2hhbmctc2kxIjAg
BgNVBAoTGUhhbmRvbmcgR2xvYmFsIFVuaXZlcnNpdHkxFjAUBgNVBAMMDSouaGFu
ZG9uZy5lZHUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCEUfaSAl0/
zUlpGF/sVn6fc2Ip84mD3At9fV2bnfah2g6g+RK7DuB+DPWp8t22MLhe30uaNdbt
T356qwE91Pa5I+C0vbuwy+MI5BjXPSJXVnSKQe/KzQhsa2qWEh0CGVT/f8riRkxH
hZ9YqCDBaSpf1MM91vf4a/Xmhq7MmZ1zMJn0oh4mKH04rbEeW2B0cbOd7KEChL/q
vrRFKW2kd99LlmtzCYu79zB9KLgFYwgciWF+lAXtHp5rswgWOrJJDIMQTCu/r/fi
VlypO+mXEqkOes/Awh7B6kQ5kA+KOdF2o/FyXCp4pG+++XetJ/EEIlzS1hZ6cqh4
WpeJW5WMWJ2tAgMBAAGjggMPMIIDCzAfBgNVHSMEGDAWgBSljP4yzOsPLNQZxgi4
ACSIXcPFtzAdBgNVHQ4EFgQURBs1e6gBGP/tQ6j3LUXtTqYOhU4wJQYDVR0RBB4w
HIINKi5oYW5kb25nLmVkdYILaGFuZG9uZy5lZHUwPgYDVR0gBDcwNTAzBgZngQwB
AgIwKTAnBggrBgEFBQcCARYbaHR0cDovL3d3dy5kaWdpY2VydC5jb20vQ1BTMA4G
A1UdDwEB/wQEAwIFoDATBgNVHSUEDDAKBggrBgEFBQcDATA7BgNVHR8ENDAyMDCg
LqAshipodHRwOi8vY2RwLnRoYXd0ZS5jb20vVGhhd3RlVExTUlNBQ0FHMS5jcmww
cAYIKwYBBQUHAQEEZDBiMCQGCCsGAQUFBzABhhhodHRwOi8vc3RhdHVzLnRoYXd0
ZS5jb20wOgYIKwYBBQUHMAKGLmh0dHA6Ly9jYWNlcnRzLnRoYXd0ZS5jb20vVGhh
d3RlVExTUlNBQ0FHMS5jcnQwDAYDVR0TAQH/BAIwADCCAX4GCisGAQQB1nkCBAIE
ggFuBIIBagFoAHYATGPcmOWcHauI9h6KPd6uj6tEozd7X5uUw/uhnPzBviYAAAGg
6rduewAABAMARzBFAiAec9BtxZdGspXF2osvx0dVXidnKE9atnjN9oS/y5DsqQIh
AIf7nRceqjJ9py8WGAoOKwq/FntjEeREKxlZubBRVdK8AHYA1tWNqdAXU/NqSqDH
V0kCr+vH3CzTjNn3ZMgMiRkenwIAAAGg6rdudQAABAMARzBFAiEA1InLIPBxqDtf
iEsaHuvXfhuncfnkVMgnKlf3FIn62FwCIHhxTXeSGiTRCh78dwN9Luj8JtTeO4XZ
fp1hwHsYqlEDAHYAHJ9oLOn68EVpUPgbloqH3dsyENhM5siy44JSSsTPWZ8AAAGg
6rduywAABAMARzBFAiAca7rRuOmH9pNaFCPS4gdzziK+QqOVabMTCeZU1YrWjwIh
AN73M4KwSInk7ZxnBBNDzWiAO3bxpPndenYAqKWek7iGMA0GCSqGSIb3DQEBCwUA
A4IBAQAKrqqiCk4KFMyRNk32jMJ8Z4M7f3ORfPFDso/n0/pQEYM9d4xdHseBomcY
U6Vz0lgoJcceOM4iqsg1mGXjbVo03h/F2SJZPGJwJ37BtlZNIO+JAVbrZi5zbJ4w
00etn7tWwr14tuSco0vN9y4GTacRdlEFL5EgioyOfSXMz/fVEQoqGy6RsgKCCeg5
4IUhvKmZcG6cty7KYpmo9FGrcDKcbzO3WJDEnV1nX5q8I6hfzP5M8J+bqCr68UU3
MNkzWYz0jSaxoLxCdmeI5qPXhf0PFt95gN4YtblNRwrQrWWZIxghopPThM/6oL+Z
KKfGhxM/KegRYelOOwlA5WBxYyo2
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-02T15:07:12+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
364
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
4091
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-----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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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