SSL/TLS Certificate Lookup

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

ec2-34-210-133-187.us-west-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-34-210-133-187.us-west-2.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
*.us-3.magentosite.cloud
Valid from
Oct 12, 2026
Valid until
Jan 10, 2027 (63 days remaining)
Public key
RSA 2048-bit
Serial
0521C62AACDB7DA0D0BBEFF11B62E01C3505
SHA-256 fingerprint
B5:F6:18:55:94:F5:F1:D2:50:41:2A:AA:58:E5:83:B8:DF:7A:37:10:04:26:AE:FE:4E:E3:4B:3C:58:68:EA:E7
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (3)
*.us-3.magentosite.cloud, admin.us-3.magento.cloud, us-3.magento.cloud

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-34-210-133-187.us-west-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-34-210-133-187.us-west-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.