SSL/TLS Certificate Lookup

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

SSL/TLS Certificate for a-ztherapy.com

Valid
Issued by (CA)
Let's Encrypt
Subject
www.a-ztherapy.com
Valid from
Oct 13, 2026
Valid until
Jan 11, 2027 (69 days remaining)
Public key
EC 256-bit
Serial
055FB45981A96148C547F2D89B83761AE947
SHA-256 fingerprint
E5:5E:71:A2:38:EE:50:45:BD:30:74:F0:37:20:C4:96:C7:E3:E7:84:DD:B2:3E:1D:FB:1C:5F:BD:1E:99:AB:75
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
a-ztherapy.com, www.a-ztherapy.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 Aug 27, 2026.

Never get surprised by a-ztherapy.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch a-ztherapy.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.