SSL/TLS Certificate Lookup

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

ec2-34-223-155-126.us-west-2.compute.amazonaws.com

SSL/TLS Certificate

SSL/TLS Certificate for ec2-34-223-155-126.us-west-2.compute.amazonaws.com

Expired
Issued by (CA)
Let's Encrypt
Subject
tk.actizone.store
Valid from
Oct 1, 2025
Valid until
Dec 30, 2025 (expired 320 days ago)
Public key
EC 256-bit
Serial
066BB7346FFFCA5EF2DFE0FA77F1F8AC77CE
SHA-256 fingerprint
BF:E0:E3:FF:25:7D:A1:6B:86:A3:DA:96:59:BA:1B:DA:3B:2C:85:F5:ED:FB:A1:E5:93:E6:39:04:17:40:23:E9
Chain
E8 → ISRG Root X1
Subject Alternative Names (1)
tk.actizone.store

Certificate Authority Authorization (CAA)

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

Never get surprised by ec2-34-223-155-126.us-west-2.compute.amazonaws.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch ec2-34-223-155-126.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.