SSL/TLS Certificate Lookup

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

ec2-54-203-224-3.us-west-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-54-203-224-3.us-west-2.compute.amazonaws.com

Self-signed
Issued by (CA)
Acme Co
Subject
Kubernetes Ingress Controller Fake Certificate
Valid from
Aug 21, 2026
Valid until
Aug 21, 2027 (285 days remaining)
Public key
RSA 2048-bit
Serial
BAC478883190AEB8D3DE48C699DD6F45
SHA-256 fingerprint
D0:D8:F1:93:3F:19:C8:8F:57:56:D8:42:44:68:71:8B:E9:25:CD:80:B7:D1:A9:DA:88:8A:66:BD:07:21:3A:62
Chain
—
Subject Alternative Names (1)
ingress.local

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-54-203-224-3.us-west-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-54-203-224-3.us-west-2.compute.amazonaws.com 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.