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 prokab.com.pl

Valid
Issued by (CA)
nazwa.pl Sp. z o.o.
Subject
prokab.com.pl
Valid from
Dec 29, 2025
Valid until
Dec 28, 2026 (131 days remaining)
Public key
EC 384-bit
Serial
4001D937856609829742982CBE20411D
SHA-256 fingerprint
E8:8F:95:3B:B0:6A:DE:10:74:27:A2:F0:F3:2F:D8:AE:12:52:B2:2A:CA:2C:32:E8:94:35:51:10:2A:A7:2E:82
Chain
nazwaSSL DV TLS G2 E29 CA → Certum EC-384 CA → Certum Trusted Network CA
Subject Alternative Names (2)
prokab.com.pl, www.prokab.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.

Never get surprised by prokab.com.pl's certificate expiring

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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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