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

example.com · 172.66.147.243:443

Verified

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

Subject
CN=example.com
Issuer
C=US O=SSL Corporation CN=Cloudflare TLS Issuing ECC CA 3
Valid from
2026-09-26T22:49:11+00:00
Expires
2026-12-25T22:56:35+00:00
Days remaining
48
Serial (hex)
01EEE6AABB521D5E14FC315FD9985690
Signature
ecdsa-with-SHA256
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:example.com, DNS:*.example.com

SHA-256 fingerprint

85:CA:6A:B0:68:E9:BC:CE:88:B6:C4:AA:3C:47:F7:D1:72:28:13:4A:45:7F:87:0D:38:00:E6:22:3A:0D:F0:7A
Certificate extensions & PEM
basicConstraints
CA:FALSE
authorityKeyIdentifier
83:03:FD:E7:F6:F5:4A:4D:15:41:F4:ED:22:16:D3:32:0A:3E:CA:66
authorityInfoAccess
CA Issuers - URI:http://i.cf-i.ssl.com/Cloudflare-TLS-I-E3.cer OCSP - URI:http://o.cf-i.ssl.com
subjectAltName
DNS:example.com, DNS:*.example.com
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.38064.1.3.1.1
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://c.cf-i.ssl.com/ae801ed1c55bb579d79208b0d772acfb8cc3a208.crl
keyUsage
Digital Signature
1.3.6.1.4.1.44363.44

ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Sep 26 22:59:12.866 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:AE:09:46:A1:45:AC:F0:39:CA:A3:DC: 0E:FB:CB:C7:97:75:00:69:2E:51:82:8E:FF:43:FF:1B: D7:77:75:FB:84:02:20:6D:CD:0A:31:2F:8C:B0:03:58: E5:62:C6:A4:78:13:93:75:31:93:48:35:55:64:D0:07: BF:2F:61:13:20:6B:51 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Sep 26 22:59:12.894 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:1D:98:37:F9:59:3F:A7:92:04:CB:55:D0: 14:EB:18:3E:CA:4B:22:95:BB:F8:BA:F1:9C:DA:F7:B9: 62:F7:A1:5C:02:21:00:D6:6B:6F:4E:73:3C:CD:B3:4A: 8F:A0:2B:52:95:A6:81:34:54:44:30:E0:38:2E:11:D4: 2D:96:E5:C4:8A:E9:F2
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-07T11:22:28+00:00

Server-presented chain · 3 additional certificates

Chain certificate 1

Subject
C=US O=SSL Corporation CN=Cloudflare TLS Issuing ECC CA 3
Issuer
C=US O=SSL Corporation CN=SSL.com TLS Transit ECC CA R2
Valid from
2025-05-29T19:49:45+00:00
Expires
2035-05-27T19:49:44+00:00
Days remaining
3123
Serial (hex)
31EEE88AFB87CD9EF8336604743F9B27
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

F1:5F:29:AB:EF:73:AA:4D:D9:AB:75:4B:AE:AE:36:85:BD:D3:87:4B:46:B5:25:07:11:77:62:86:85:71:80:26
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
authorityKeyIdentifier
32:A2:C7:D8:58:8B:FF:7F:C0:3C:F2:55:69:33:EC:CE:CC:1F:BC:97
authorityInfoAccess
CA Issuers - URI:http://cert.ssl.com/SSL.com-TLS-T-ECC-R2.cer
certificatePolicies
Policy: X509v3 Any Policy
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crls.ssl.com/SSL.com-TLS-T-ECC-R2.crl
subjectKeyIdentifier
83:03:FD:E7:F6:F5:4A:4D:15:41:F4:ED:22:16:D3:32:0A:3E:CA:66
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=SSL Corporation CN=SSL.com TLS Transit ECC CA R2
Issuer
C=US O=SSL Corporation CN=SSL.com TLS ECC Root CA 2022
Valid from
2022-10-21T17:02:23+00:00
Expires
2037-10-17T17:02:22+00:00
Days remaining
3997
Serial (hex)
604D8AF8D00BA8748B955853172C5F2E
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

5D:1B:C3:99:27:4E:64:9E:1C:72:69:7D:E9:1A:54:AD:72:50:88:C5:22:1C:B6:1E:17:EE:9C:29:0B:C4:2A:92
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:1
authorityKeyIdentifier
89:8F:2F:A3:E8:2B:A0:14:54:7B:F3:56:B8:26:5F:67:38:0B:9C:D0
authorityInfoAccess
CA Issuers - URI:http://cert.ssl.com/SSLcom-TLS-Root-2022-ECC.cer
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.ssl.com/repository
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crls.ssl.com/SSLcom-TLS-Root-2022-ECC.crl
subjectKeyIdentifier
32:A2:C7:D8:58:8B:FF:7F:C0:3C:F2:55:69:33:EC:CE:CC:1F:BC:97
keyUsage
Digital Signature, Certificate Sign, CRL Sign
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 3

Subject
C=US O=SSL Corporation CN=SSL.com TLS ECC Root CA 2022
Issuer
C=GB ST=Greater Manchester L=Salford O=Comodo CA Limited CN=AAA Certificate Services
Valid from
2025-08-01T00:00:00+00:00
Expires
2028-12-31T23:59:59+00:00
Days remaining
785
Serial (hex)
173DCA60EA9F8E1026DAFCD72810E48E
Signature
RSA-SHA256
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

BA:06:D3:D3:E3:48:FC:E7:47:8C:C8:4B:42:2D:0E:63:8E:9E:22:1E:F1:A0:B5:3A:DC:14:CC:70:E0:4B:8A:B8
Certificate extensions & PEM
authorityKeyIdentifier
A0:11:0A:23:3E:96:F1:07:EC:E2:AF:29:EF:82:A5:7F:D0:30:A4:B4
subjectKeyIdentifier
89:8F:2F:A3:E8:2B:A0:14:54:7B:F3:56:B8:26:5F:67:38:0B:9C:D0
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:2
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
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 Policy: 1.3.6.1.4.1.38064.1.3.1.1 Policy: 1.3.6.1.4.1.38064.1.3.1.2 Policy: 1.3.6.1.4.1.38064.1.3.1.3 Policy: 1.3.6.1.4.1.38064.1.3.1.4 Policy: 1.3.6.1.4.1.38064.1.3.1.5 Policy: 1.3.6.1.4.1.38064.1.3.1.6
crlDistributionPoints
Full Name: URI:http://crl.comodoca.com/AAACertificateServices.crl
authorityInfoAccess
OCSP - URI:http://ocsp.comodoca.com
-----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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