SSL/TLS Certificate Lookup

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

ec2-18-220-34-4.us-east-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-18-220-34-4.us-east-2.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Amazon
Subject
201818-dev-f-capi-537-use2.alb.4ht88ccuzkyy.services.ally.com
Valid from
Oct 21, 2026
Valid until
May 6, 2027 (173 days remaining)
Public key
RSA 2048-bit
Serial
03A99368C62F9A62BDC0DB7127AF1FF2
SHA-256 fingerprint
44:DE:5E:B2:FE:A1:04:F0:DF:4D:56:32:25:41:A8:00:1B:A0:9B:62:8B:92:B7:1B:BA:E6:4F:F4:2E:E9:55:5D
Chain
Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (2)
201818-dev-f-capi-537-use2.alb.4ht88ccuzkyy.services.ally.com, 201818-dev-f-capi-537.live.4ht88ccuzkyy.services.ally.com

Certificate Authority Authorization (CAA)

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

This certificate has been served since Sep 30, 2026.

Never get surprised by ec2-18-220-34-4.us-east-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-18-220-34-4.us-east-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.