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 t-mac.co.th

Self-signed
Issued by (CA)
NGO
Subject
111.223.52.37 111.223.52.37
Valid from
Oct 6, 2016
Valid until
May 28, 2041 (5416 days remaining)
Public key
RSA 2048-bit
Serial
AB7125B39CA61477
SHA-256 fingerprint
29:17:7E:D6:3F:CD:C1:64:3C:3F:6F:17:25:E5:4F:90:52:F2:6D:A5:7A:B9:A2:F6:A4:19:5B:A5:1A:7F:00:B0
Chain
111.223.52.37 111.223.52.37

Certificate Authority Authorization (CAA)

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

Never get surprised by t-mac.co.th's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch t-mac.co.th 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.