SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
e-omikron.pl
SSL/TLS Certificate
SSL/TLS Certificate for e-omikron.pl
Valid- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- *.e-omikron.pl
- Valid from
- Jun 19, 2026
- Valid until
- Jan 4, 2027 (93 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 3211CF4D170CAF126856F3810B446C36
- SHA-256 fingerprint
- 63:94:AD:15:E7:9E:CE:89:91:5A:FD:73:62:27:B3:D5:B4:AB:C1:AF:E0:AB:FA:CD:19:17:EF:DE:00:26:E8:19
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA
Certificate Authority Authorization (CAA)
CAA restricts issuance to certum.pl; we couldn't map the serving CA (Asseco Data Systems S.A.) to one of these identifiers.
This certificate has been served since Aug 19, 2026.
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Uptime
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DNS changes
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TLS certificate
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