SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

telmark.pl

SSL/TLS Certificate

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SSL/TLS Certificate for telmark.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
www.telmark.pl
Valid from
Jun 27, 2026
Valid until
Sep 25, 2026 (66 days remaining)
Public key
RSA 2048-bit
Serial
05552243AA323A6A1D19FE012DE871E9E63D
SHA-256 fingerprint
40:60:2F:F4:85:E4:60:6E:EB:F9:A6:96:A8:D0:70:94:D2:AF:57:3B:BA:AD:83:30:D0:C2:29:F8:F2:21:CA:D3
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
telmark.pl, www.telmark.pl

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.