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 wignet.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
klasa2b.wignet.pl
Valid from
Jul 7, 2026
Valid until
Oct 5, 2026 (28 days remaining)
Public key
RSA 4096-bit
Serial
058B19225E37F7B3A4798096C2F175A6D26F
SHA-256 fingerprint
5D:DF:2E:EC:85:0E:E8:F4:D7:03:5D:D9:3D:0B:E4:7B:5E:CC:2E:57:90:93:8A:62:5D:16:AB:F1:17:2B:87:12
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (3)
klasa2b.wignet.pl, wignet.pl, www.wignet.pl

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).

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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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