SSL/TLS Certificate Lookup

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

koltun.com.pl

SSL/TLS Certificate

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SSL/TLS Certificate for koltun.com.pl

Valid
Issued by (CA)
nazwa.pl Sp. z o.o.
Subject
koltun.com.pl
Valid from
Jun 19, 2026
Valid until
Dec 25, 2026 (156 days remaining)
Public key
EC 384-bit
Serial
36A396D793D424C83F121F871CEEAACC
SHA-256 fingerprint
DD:E4:20:D5:6E:E8:3B:AB:F0:46:95:D8:7C:33:6A:F5:5A:17:E2:5C:72:FF:65:F1:14:1C:09:A6:1C:3C:1B:E3
Chain
nazwaSSL DV TLS G2 E29 CA → Certum EC-384 CA → Certum Trusted Network CA
Subject Alternative Names (2)
koltun.com.pl, www.koltun.com.pl

Certificate Authority Authorization (CAA)

CAA restricts issuance to certum.pl, letsencrypt.org; we couldn't map the serving CA (nazwa.pl Sp. z o.o.) to one of these identifiers.