SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

ec2-54-171-138-2.eu-west-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-54-171-138-2.eu-west-1.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Amazon
Subject
cluster1.my-hosts.com
Valid from
Feb 25, 2026
Valid until
Sep 10, 2026 (49 days remaining)
Public key
RSA 2048-bit
Serial
0136EFFDCF65D788C35EC502BCD71EDE
SHA-256 fingerprint
14:9D:D8:A9:3D:79:F1:1A:80:78:E7:83:78:2D:9B:7E:3D:04:33:F2:63:19:2C:3B:90:60:9A:EC:83:FA:2F:E8
Chain
Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (10)
cluster1.my-hosts.com, cluster2.my-hosts.com, files.my-hosts.com, syslog.my-hosts.com, www.localhost.me.uk, www.my-hosts.co.uk, www.my-hosts.com, www.my-hosts.net, www.tngdc.co.uk, yum.my-hosts.com

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-54-171-138-2.eu-west-1.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-54-171-138-2.eu-west-1.compute.amazonaws.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.