SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for roksi.pl
Untrusted chain- Issued by (CA)
- Let's Encrypt
- Subject
- roksi.pl
- Valid from
- Aug 26, 2026
- Valid until
- Nov 24, 2026 (48 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05033022A9B797D12F638007B0963F3F6AC6
- SHA-256 fingerprint
- 07:4A:6F:4A:BD:3C:37:1D:D1:60:60:03:26:F0:9A:E0:E7:1C:87:55:CB:DC:89:2D:95:E4:AE:13:EA:44:66:96
- Chain
- YR1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 30, 2026.
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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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