SSL/TLS Certificate Lookup

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

ec2-108-128-236-61.eu-west-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-108-128-236-61.eu-west-1.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Amazon
Subject
eu.threatsim.com
Valid from
Nov 9, 2025
Valid until
Dec 8, 2026 (135 days remaining)
Public key
RSA 2048-bit
Serial
0B62E13D250F6B25B8055AB786111A23
SHA-256 fingerprint
88:D9:84:B9:16:3F:9A:43:8D:82:C1:BF:2C:FA:42:A0:B5:EA:D2:05:64:46:82:43:E6:30:25:C3:AA:9C:22:BD
Chain
Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (8)
*.eu.securityeducation.com, *.eu.threatsim.com, *.proofpoint-simulations.eu, eu.securityeducation.com, eu.threatsim.com, phishsim-eu.securityeducation.com, phishsim.ws02-securityeducation.com, proofpoint-simulations.eu

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-108-128-236-61.eu-west-1.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-108-128-236-61.eu-west-1.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.