SSL/TLS Certificate Lookup

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

ec2-52-88-14-244.us-west-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-52-88-14-244.us-west-2.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Sectigo Limited
Subject
*.aiyellow.com
Valid from
Jun 8, 2026
Valid until
Dec 23, 2026 (133 days remaining)
Public key
RSA 2048-bit
Serial
DE3B557DD5ACB1D28F0E154D59B5EA0B
SHA-256 fingerprint
12:DD:3D:DA:92:08:79:70:FB:8A:5B:35:B0:C3:24:E8:9E:C8:4F:00:22:A7:4C:2E:BB:56:89:09:53:28:17:9D
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.aiyellow.com, aiyellow.com

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-52-88-14-244.us-west-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-52-88-14-244.us-west-2.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.