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 scanthehorizon.app

Valid
Issued by (CA)
Amazon
Subject
scanthehorizon.app
Valid from
Oct 30, 2026
Valid until
May 15, 2027 (188 days remaining)
Public key
EC 384-bit
Serial
051DCF68ADFF96A7874612D1C3DC49E7
SHA-256 fingerprint
8B:E2:38:36:17:C9:FD:D0:06:EF:50:83:FB:C8:F8:87:20:27:E3:CB:CF:E8:A5:E6:7D:A3:45:51:A5:41:37:B4
Chain
Amazon ECDSA 384 M04 → Amazon Root CA 4 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (2)
scanthehorizon.app, www.scanthehorizon.app

Certificate Authority Authorization (CAA)

The serving CA (Amazon) is authorized by this domain's CAA records (amazon.com).

This certificate has been served since Nov 2, 2026.

Never get surprised by scanthehorizon.app's certificate expiring

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

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.