SSL/TLS Certificate Lookup

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

ec2-18-142-40-162.ap-southeast-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-18-142-40-162.ap-southeast-1.compute.amazonaws.com

Self-signed
Issued by (CA)
WMSvc-SHA2-EC2AMAZ-36IT9RU
Subject
WMSvc-SHA2-EC2AMAZ-36IT9RU
Valid from
Jan 23, 2025
Valid until
Jan 21, 2035 (2990 days remaining)
Public key
RSA 2048-bit
Serial
5AEC0DF149B04E8E4F012625317429A1
SHA-256 fingerprint
DB:01:CD:6A:F4:D9:1E:B1:C8:6A:BC:3E:DA:36:C5:63:46:15:62:AA:B2:8D:36:D6:F0:25:AD:41:6D:1C:92:BD
Chain
—

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-18-142-40-162.ap-southeast-1.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-18-142-40-162.ap-southeast-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.