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 acnex.pl
Untrusted chain- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- acnex.pl
- Valid from
- Jul 22, 2026
- Valid until
- Feb 6, 2027 (154 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 37807CA60087FF0A5D444C2670AE4E0E
- SHA-256 fingerprint
- 13:D7:BA:79:B0:9A:B8:64:2E:44:6F:E2:3D:1A:63:FE:E9:58:C2:0C:53:E3:4E:46:BF:5C:C8:20:53:94:7E:AB
- Chain
- —
Certificate Authority Authorization (CAA)
CAA restricts issuance to certum.pl, letsencrypt.org; we couldn't map the serving CA (Asseco Data Systems S.A.) to one of these identifiers.
This certificate has been served since Aug 4, 2026.
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Uptime
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TLS certificate
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