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 dim-office.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
dim-office.pl
Valid from
Jul 27, 2026
Valid until
Oct 25, 2026 (28 days remaining)
Public key
EC 384-bit
Serial
06A7FDF3CD2112CFAC251FDBF752D10BCBD3
SHA-256 fingerprint
51:E3:5B:9F:2A:7F:B6:98:F1:FA:69:AD:44:B2:68:EA:8F:31:0C:05:A6:DC:0B:F7:14:89:81:EF:5E:E3:55:B7
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (3)
dim-office.pl, mail.dim-office.pl, www.dim-office.pl

Certificate Authority Authorization (CAA)

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

This certificate has been served since Aug 12, 2026.

Never get surprised by dim-office.pl's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch dim-office.pl continuously, notifying you the moment anything moves across all three signals:

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.