SSL/TLS Certificate Lookup

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

SSL/TLS Certificate for karsa-monitor.com

Hostname mismatch
Issued by (CA)
Sectigo Limited
Subject
blog.karsa-monitor.cz
Valid from
Dec 1, 2025
Valid until
Dec 31, 2026 (160 days remaining)
Public key
RSA 2048-bit
Serial
E88FF37FDD025C1B262A4BBCC770BEEE
SHA-256 fingerprint
61:D6:1F:FE:75:F2:56:11:9F:5A:8F:31:6A:FA:A7:29:4F:FE:30:73:AB:56:6D:93:02:6A:83:C2:C0:BC:5B:2A
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Subject Alternative Names (2)
blog.karsa-monitor.cz, www.blog.karsa-monitor.cz

Certificate Authority Authorization (CAA)

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TLS certificate

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