SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

bertrandt.biz

SSL/TLS Certificate

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SSL/TLS Certificate for bertrandt.biz

Valid

Issued by (CA): DigiCert Inc
Subject: *.bertrandt.biz
Valid from: Jan 26, 2026
Valid until: Jan 26, 2027 (99 days remaining)
Public key: RSA 2048-bit
Serial: 0417D1C1209787176F6FFD47EEE20493
SHA-256 fingerprint: 91:7F:46:DD:EB:6E:E8:53:6F:E4:5C:FD:3C:89:86:AC:EF:68:94:DB:11:D6:2C:66:19:91:E0:65:1C:D6:6E:7A
Chain: Thawte TLS RSA CA G1 → DigiCert Global Root G2

Subject Alternative Names (2)

*.bertrandt.biz, bertrandt.biz

Certificate Authority Authorization (CAA)

The serving CA (DigiCert Inc) is not among the authorities this domain's CAA records authorize (telesec.de). This can indicate a misconfiguration or an unexpected issuance.

This certificate has been served since Aug 13, 2026.

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TLS certificate

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