SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
luz-torun.pl
SSL/TLS Certificate
SSL/TLS Certificate for luz-torun.pl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- luz-torun.pl
- Valid from
- Aug 21, 2026
- Valid until
- Nov 19, 2026 (77 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05198789A7EA3EB337E221A0F63DC513E317
- SHA-256 fingerprint
- 3B:B3:FE:83:FA:F6:9F:76:48:9A:92:E4:37:1E:8A:88:BA:13:1D:F2:CA:26:BB:F2:EE:40:31:0E:56:2B:E2:43
- Chain
- YR1 → 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 1, 2026.
Never get surprised by luz-torun.pl's certificate expiring
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Uptime
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
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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