SSL/TLS Certificate Lookup

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

ec2-16-54-60-144.ca-central-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-16-54-60-144.ca-central-1.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Sectigo Limited
Subject
*.letplan.ca
Valid from
Oct 18, 2026
Valid until
Apr 16, 2027 (153 days remaining)
Public key
RSA 2048-bit
Serial
BCD85FF2D688BB4C70EB7943EFEE7975
SHA-256 fingerprint
D5:B1:A1:32:56:F6:F4:8A:31:BA:F0:27:99:42:8B:80:50:B9:28:D6:51:D8:96:D6:06:64:ED:ED:E1:08:D2:5E
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.letplan.ca, letplan.ca

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-16-54-60-144.ca-central-1.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-16-54-60-144.ca-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.