SSL/TLS Certificate Lookup

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

b2b.auto.pl

SSL/TLS Certificate

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SSL/TLS Certificate for b2b.auto.pl

Untrusted chain
Issued by (CA)
cyber_Folks S.A.
Subject
b2b.auto.pl
Valid from
Feb 13, 2026
Valid until
Feb 4, 2027 (197 days remaining)
Public key
RSA 4096-bit
Serial
285CC895CF0332D4C11CC39DA10B7C0B
SHA-256 fingerprint
80:10:CB:6A:99:2B:44:19:4F:84:34:DC:61:A4:CA:8F:ED:49:65:48:EE:62:8C:8E:E7:38:4A:93:B1:B9:C6:B3
Chain
—
Subject Alternative Names (2)
b2b.auto.pl, www.b2b.auto.pl

Certificate Authority Authorization (CAA)

CAA restricts issuance to certum.pl, letsencrypt.org; we couldn't map the serving CA (cyber_Folks S.A.) to one of these identifiers.