SSL/TLS Certificate Lookup

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

ec2-44-229-43-210.us-west-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-44-229-43-210.us-west-2.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
exonbio.com
Valid from
Oct 13, 2026
Valid until
Jan 11, 2027 (62 days remaining)
Public key
RSA 2048-bit
Serial
050746C9E012B47C599AAEF602CC2D5A8BEA
SHA-256 fingerprint
30:0A:83:05:9C:84:15:80:DE:A4:77:5E:65:D9:DA:A7:90:AE:93:CB:89:A7:C5:7A:86:78:B5:F5:04:38:84:B8
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (3)
archive.exonbio.com, exonbio.com, www.exonbio.com

Certificate Authority Authorization (CAA)

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

This certificate has been served since Sep 24, 2026.

Never get surprised by ec2-44-229-43-210.us-west-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-44-229-43-210.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.