SSL/TLS Certificate Lookup

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

ec2-13-237-245-52.ap-southeast-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-13-237-245-52.ap-southeast-2.compute.amazonaws.com

Self-signed
Issued by (CA)
ip-172-26-5-45
Subject
ip-172-26-5-45
Valid from
Oct 22, 2026
Valid until
Oct 19, 2036 (3629 days remaining)
Public key
RSA 2048-bit
Serial
72DB8929CF60E0C472108B154ECE78EE0A03BD03
SHA-256 fingerprint
EA:FE:CD:9D:86:09:BB:CC:C1:29:C2:FA:AC:73:61:CD:43:9A:1A:98:5F:81:D5:BF:B9:83:2F:08:CB:19:9D:9C
Chain
ip-172-26-5-45
Subject Alternative Names (1)
ip-172-26-5-45

Certificate Authority Authorization (CAA)

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

This certificate has been served since Oct 4, 2026.

Never get surprised by ec2-13-237-245-52.ap-southeast-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-13-237-245-52.ap-southeast-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.