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 comnica.org

Self-signed
Issued by (CA)
ta78.tarhely.eu
Subject
ta78.tarhely.eu
Valid from
Nov 22, 2024
Valid until
Nov 22, 2025 (expired 298 days ago)
Public key
RSA 4096-bit
Serial
0A21F06B5F846C41E336F83A32A097408F61B30F
SHA-256 fingerprint
B9:29:07:4D:27:F0:4E:21:66:80:CB:30:24:E9:32:38:BE:44:AA:25:CD:27:54:6F:DA:01:05:A8:B2:A0:00:DF
Chain
ta78.tarhely.eu

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 Sep 11, 2026.

Never get surprised by comnica.org's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch comnica.org 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.