SSL/TLS Certificate Lookup

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

ec2-3-23-72-2.us-east-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-3-23-72-2.us-east-2.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Amazon
Subject
*.c3po.padsplit.com
Valid from
Jul 20, 2026
Valid until
Feb 2, 2027 (83 days remaining)
Public key
RSA 2048-bit
Serial
0A27B94B6C0EF54B2AEEFD2187B62DA1
SHA-256 fingerprint
B5:16:23:D7:2C:8F:F6:C4:12:2A:E6:7D:D1:D4:73:12:D9:A6:76:3F:26:35:C5:65:96:00:B9:B7:B1:73:0C:EA
Chain
Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (1)
*.c3po.padsplit.com

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-3-23-72-2.us-east-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-3-23-72-2.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.