SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gpk-kostkowo.pl
SSL/TLS Certificate
SSL/TLS Certificate for gpk-kostkowo.pl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.gpk-kostkowo.pl
- Valid from
- Oct 28, 2026
- Valid until
- Jan 26, 2027 (74 days remaining)
- Public key
- EC 256-bit
- Serial
- 06E1D87431EAD0335FE5A834DF3B4810A2D8
- SHA-256 fingerprint
- 4B:92:66:1B:FA:4C:4D:06:95:05:5E:4B:8F:9E:30:12:60:6E:37:6C:54:6B:E6:ED:FD:02:47:F3:0E:8A:02:4D
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
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
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