SSL/TLS Certificate Lookup

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

ec2-56-126-172-254.sa-east-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-56-126-172-254.sa-east-1.compute.amazonaws.com

Self-signed
Issued by (CA)
TRAEFIK DEFAULT CERT
Subject
TRAEFIK DEFAULT CERT
Valid from
Aug 18, 2026
Valid until
Aug 18, 2027 (364 days remaining)
Public key
RSA 2048-bit
Serial
EA488329C5358DA847E5613F23F4B4A1
SHA-256 fingerprint
B5:2F:3C:63:73:03:CE:2A:79:87:EF:07:BF:9B:8C:51:32:E0:65:0D:B3:8A:73:23:72:4C:97:13:BF:3A:0D:40
Chain
Subject Alternative Names (1)
d0906980399d9605f3063e50aa0e9986.964bb2e08c590f1fb1fc05414a962737.traefik.default

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-56-126-172-254.sa-east-1.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-56-126-172-254.sa-east-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.