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

nominet.org.uk · 162.159.134.42:443

Verified

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

Subject
C=GB L=Oxford O=Nominet UK CN=*.nominet.org.uk
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-09-10T00:00:00+00:00
Expires
2027-03-27T23:59:59+00:00
Days remaining
188
Serial (hex)
02AEACBFB8F3E27509A4B5254D1CE0EA
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.nominet.org.uk, DNS:nominet.org.uk

SHA-256 fingerprint

6A:0F:8D:32:08:38:10:CB:F3:45:B0:FE:0B:64:70:1E:46:B6:53:23:93:50:FC:92:D6:7E:50:44:1D:1E:35:C2
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
98:9F:B1:98:DE:EC:3C:6B:0F:04:D1:12:46:B1:58:A3:67:0B:A4:41
subjectAltName
DNS:*.nominet.org.uk, DNS:nominet.org.uk
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.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 10 09:49:48.510 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:91:2A:DF:8D:77:B5:F6:9A:67:87:C2: E1:E1:68:F2:F6:33:D0:AB:5A:B4:9D:BB:33:68:1D:2A: 29:FF:99:DA:81:02:21:00:E4:76:44:CA:8C:AA:11:05: 14:46:72:94:FF:1B:2B:B9:B7:AC:FE:67:18:E3:03:58: A6:67:E0:34:DB:2D:D9:6B 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 10 09:49:48.465 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:6D:FA:C0:0E:21:F7:20:43:10:FB:D7:F2: B4:1D:2F:F1:03:57:18:DF:5D:13:C7:D6:C4:54:4A:48: 1F:07:E5:C2:02:21:00:FD:4D:EF:F5:4A:ED:D9:5D:70: 74:79:72:9F:53:EB:A0:1E:96:61:5B:EB:01:A5:F1:A9: 86:33:AE:54:B5:DF:7E 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 : Sep 10 09:49:48.547 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:63:F2:48:64:0A:1D:46:FF:D5:BF:E6:18: 48:9F:C1:D8:EE:0A:E5:40:29:AF:A3:C9:5A:9E:6E:25: A0:B1:90:C1:02:20:5D:02:9B:34:E6:B2:28:9A:C3:9E: 0D:23:35:69:88:49:B3:EC:C5:F7:94:A6:2B:62:3F:5D: D4:6B:C1:9C:DB:AC
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-09-20T09:17:21+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2020-09-24T00:00:00+00:00
Expires
2030-09-23T23:59:59+00:00
Days remaining
1464
Serial (hex)
085F94C02D857BE8CC14FF53EDA23E2A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

1F:8E:B9:E9:A8:E0:66:CC:5B:38:33:E0:6B:31:29:76:4B:62:26:39:D5:B1:63:F6:00:E1:C7:91:20:BF:3E:ED
Certificate extensions & PEM
subjectKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
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 CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG2.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.23.140.1.1 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 2.23.140.1.2.3
-----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 CA
Valid from
2024-01-18T00:00:00+00:00
Expires
2031-11-09T23:59:59+00:00
Days remaining
1876
Serial (hex)
0FE032AB844D033106C50C8E13C8B068
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

79:D5:7B:15:DF:A6:5C:28:70:EA:FE:11:B6:37:76:59:09:CF:E9:37:B4:9C:15:CE:7F:19:40:30:CA:B3:95:AD
Certificate extensions & PEM
basicConstraints
CA:TRUE
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
authorityKeyIdentifier
03:DE:50:35:56:D1:4C:BB:66:F0:A3:E2:1B:1B:C3:97:B2:3D:D1:55
keyUsage
Digital Signature, Certificate Sign, CRL Sign
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.cn CA Issuers - URI:http://cacerts.digicert.cn/DigiCertGlobalRootCA.crt
crlDistributionPoints
Full Name: URI:http://crl.digicert.cn/DigiCertGlobalRootCA.crl
certificatePolicies
Policy: X509v3 Any Policy
-----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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