SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
e-firma.pl
SSL/TLS Certificate
SSL/TLS Certificate for e-firma.pl
Expired- Issued by (CA)
- Unizeto Technologies S.A.
- Subject
- nadzor-pedagogiczny.pl
- Valid from
- Sep 14, 2017
- Valid until
- Sep 14, 2018 (expired 2874 days ago)
- Public key
- RSA 2048-bit
- Serial
- 12AD5284F7DC92E4D7BE57E64F68BE71
- SHA-256 fingerprint
- BD:24:72:1C:A2:FD:28:B6:67:D1:8D:B3:8C:79:75:79:2F:D6:AD:AB:A9:10:F6:46:8B:6B:0C:18:29:FE:5A:1A
- Chain
- Certum Domain Validation CA SHA2 → Certum Trusted Network CA
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 Jul 26, 2026.
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TLS certificate
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