SSL/TLS Certificate Lookup

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

upominki24.pl

SSL/TLS Certificate

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SSL/TLS Certificate for upominki24.pl

Valid
Issued by (CA)
Sectigo Limited
Subject
upominki24.pl
Valid from
Mar 16, 2026
Valid until
Sep 30, 2026 (72 days remaining)
Public key
RSA 2048-bit
Serial
BC1396AA8AB82BF6392CA85CE00AD9C4
SHA-256 fingerprint
F8:FD:D3:A3:BB:97:20:1E:4C:F8:28:45:54:FC:2E:64:37:2C:84:2F:EF:08:84:28:78:6D:52:24:48:65:6B:AD
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
upominki24.pl, www.upominki24.pl

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.