SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
janjedrusiak.pl
SSL/TLS Certificate
SSL/TLS Certificate for janjedrusiak.pl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- janjedrusiak.pl
- Valid from
- Sep 20, 2026
- Valid until
- Dec 19, 2026 (77 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 068103C444FD4F84F8962452F19BBD1E2F1E
- SHA-256 fingerprint
- 03:39:FB:99:04:D3:47:F4:DA:8A:73:EF:09:13:52:F4:E4:9E:C4:73:59:BE:AC:65:2A:0A:AA:4E:2D:52:F2:50
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 25, 2026.
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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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