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 zam.com.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
zam.com.pl
Valid from
Jun 16, 2026
Valid until
Sep 14, 2026 (50 days remaining)
Public key
EC 256-bit
Serial
06588088C50B9F41B77BD3410328D47DABCA
SHA-256 fingerprint
7A:45:4F:7D:F6:4E:34:A1:C1:8E:12:6E:79:D5:37:11:CD:4E:D1:B3:4B:DA:68:23:BF:F7:EB:5B:1B:F9:73:7F
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
www.zam.com.pl, zam.com.pl

Certificate Authority Authorization (CAA)

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

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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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