SSL/TLS Certificate Lookup

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

ec2-3-97-165-23.ca-central-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-3-97-165-23.ca-central-1.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
sigoerp.com.br
Valid from
Jun 18, 2026
Valid until
Sep 16, 2026 (39 days remaining)
Public key
EC 256-bit
Serial
05830F0C97D8CF12511EA33B091BBFA6B6F4
SHA-256 fingerprint
74:17:8D:D8:FB:A9:E3:FD:38:F5:5B:B6:C7:16:1B:55:DA:F6:9B:C7:C9:FB:D7:6C:06:16:84:17:39:C9:93:CF
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
sigoerp.com.br, www.sigoerp.com.br

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-3-97-165-23.ca-central-1.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-3-97-165-23.ca-central-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.