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

tom.com · 47.75.233.129:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
CN=*.tom.com
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2026-09-16T00:00:00+00:00
Expires
2027-03-13T23:59:59+00:00
Days remaining
171
Serial (hex)
01795874C414C9B359F144A67B5FACFB
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.tom.com, DNS:tom.com

SHA-256 fingerprint

7B:61:26:39:B4:B4:49:FC:8A:3F:8A:34:2A:50:AA:A1:1D:9B:85:41:1A:33:03:B9:83:B4:04:4D:E0:25:7B:DD
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
01:89:57:E9:88:54:5E:C1:B9:63:C7:0D:7E:C8:4F:43:55:B7:10:AB
subjectAltName
DNS:*.tom.com, DNS:tom.com
certificatePolicies
Policy: 2.23.140.1.2.1 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 16 07:44:37.500 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:0C:DB:44:7B:E9:39:36:9A:79:A3:FB:BD: 6A:28:DF:F5:A6:3E:FD:DE:84:81:CC:94:DF:2A:8D:64: 53:A1:75:93:02:21:00:E3:4E:4B:0C:FD:2C:C9:7F:EC: D0:59:66:61:E8:51:71:AA:EE:88:CC:1E:7A:11:73:F6: 95:6B:7C:E5:10:88:CF 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 16 07:44:37.663 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:42:31:77:61:65:70:77:D1:14:32:74:F6: 79:58:B4:87:11:06:10:E7:BA:FB:3F:1B:62:A0:6D:B4: 6F:CF:CA:A9:02:20:31:F9:0E:A2:70:CA:83:ED:8F:B8: 3A:F0:53:C1:AF:01:47:ED:6E:B2:68:50:CA:67:1F:5E: B0:B5:1F:7D:A6:63 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 16 07:44:37.538 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:E8:D5:34:3A:2F:1B:60:0D:BC:93:30: 4B:99:94:42:DF:5C:86:0B:7C:5A:4A:CD:1B:E7:BC:8C: E0:E6:BF:32:A6:02:21:00:D9:50:7A:6C:F6:54:CB:77: 58:A4:0D:53:47:21:4E:4B:E1:3F:E4:CD:2C:DD:0B:CB: 6F:82:41:FB:58:83:D3:83
-----BEGIN CERTIFICATE-----
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MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
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oQchW2p22ikJaHVvg0FubTionkVAtxLNOA==
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-09-23T03:29:39+00:00

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

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