SSL/TLS Certificate Lookup

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

ec2-16-164-44-79.il-central-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-16-164-44-79.il-central-1.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Amazon
Subject
wstprogear.com
Valid from
Oct 11, 2026
Valid until
Apr 26, 2027 (169 days remaining)
Public key
RSA 2048-bit
Serial
0DBDB238FD862C10E4C0E1CCBA79C6A3
SHA-256 fingerprint
EA:89:DA:F5:51:0E:8E:0D:A8:6F:04:89:80:9E:5C:21:19:85:5C:E3:57:33:FD:0F:70:10:6B:1B:CD:76:36:6D
Chain
Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (6)
*.gspsecuritypro.com, *.wstprogear.com, gspsecuritypro.com, wstprogear.com, www.gspsecuritypro.com, www.wstprogear.com

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-16-164-44-79.il-central-1.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-16-164-44-79.il-central-1.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.