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 gemur.pl
Untrusted chain- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- gemur.pl
- Valid from
- Oct 16, 2025
- Valid until
- Oct 16, 2026 (34 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 69E2317A8F975B70373086E46B8C6D0D
- SHA-256 fingerprint
- 4C:31:C3:85:27:DA:CE:B7:90:81:CB:91:6F:EE:C1:D2:D9:95:A4:32:DC:17:04:BC:1D:10:1C:FF:DE:70:6F:E6
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 7, 2026.
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TLS certificate
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