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 geo-wiki.com

Valid
Issued by (CA)
Let's Encrypt
Subject
www.geo-wiki.com
Valid from
Aug 1, 2026
Valid until
Oct 30, 2026 (48 days remaining)
Public key
EC 256-bit
Serial
051B194D59032D229954D7C074E13DE8BBE5
SHA-256 fingerprint
2D:07:D3:07:24:52:EC:97:34:4B:5B:27:06:EB:2F:E8:4B:BA:33:49:BB:33:C5:AA:4A:2F:A4:A7:F2:EC:A5:AC
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
geo-wiki.com, www.geo-wiki.com

Certificate Authority Authorization (CAA)

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

Never get surprised by geo-wiki.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch geo-wiki.com 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.