SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
spswiatki.edu.pl
SSL/TLS Certificate
SSL/TLS Certificate for spswiatki.edu.pl
Valid- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- spswiatki.edu.pl
- Valid from
- Nov 18, 2025
- Valid until
- Nov 18, 2026 (117 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 4C9CB2DDC5CF6273D92C3EC468E11195
- SHA-256 fingerprint
- 4A:4A:FE:35:F3:90:2F:52:02:4A:3B:3C:86:AE:5A:E1:EA:EA:69:1B:FB:3F:99:4B:32:FE:B3:C0:35:09:0C:00
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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DNS changes
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TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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