SSL/TLS Certificate Lookup

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

ec2-54-253-101-221.ap-southeast-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-54-253-101-221.ap-southeast-2.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
butt1993.com
Valid from
Jun 17, 2026
Valid until
Sep 15, 2026 (48 days remaining)
Public key
EC 256-bit
Serial
057ED6CF81F3053C4EC92CAF76296B9EFA86
SHA-256 fingerprint
0C:3D:97:A4:76:19:62:CA:9C:72:37:7A:61:6A:C0:15:2D:A6:27:61:43:31:91:0D:DE:9D:70:F2:80:34:DB:E0
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
butt1993.com, www.butt1993.com

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-54-253-101-221.ap-southeast-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-54-253-101-221.ap-southeast-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.