SSL/TLS Certificate Lookup

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

ec2-3-140-70-184.us-east-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-3-140-70-184.us-east-2.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Amazon
Subject
psik.io
Valid from
Dec 20, 2025
Valid until
Jan 17, 2027 (154 days remaining)
Public key
RSA 2048-bit
Serial
0C7B67B0FAA8A12CBB5FB6637CE042DF
SHA-256 fingerprint
18:5D:15:66:85:54:D7:A8:DF:85:D4:E6:F6:DE:D4:A3:1E:1B:A1:2D:77:69:B2:87:6A:A8:B4:E7:38:E7:C6:FC
Chain
Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (2)
*.psik.io, psik.io

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-3-140-70-184.us-east-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-3-140-70-184.us-east-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.