SSL/TLS Certificate Lookup

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

ec2-54-151-103-125.us-west-1.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-54-151-103-125.us-west-1.compute.amazonaws.com

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
*.us.navixy.com
Valid from
Oct 3, 2026
Valid until
Jan 1, 2027 (47 days remaining)
Public key
RSA 2048-bit
Serial
05ACF8BE60A1FF16EEFD38C93AEFDDBD3BE8
SHA-256 fingerprint
EC:6B:FF:AC:F0:D1:F0:A9:DD:F1:2E:DE:80:98:E1:C2:7D:19:CA:51:C4:A9:D6:9C:CC:71:2A:A9:B1:5C:33:DE
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (1)
*.us.navixy.com

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-54-151-103-125.us-west-1.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-54-151-103-125.us-west-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.