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 aas-nz.com

Valid
Issued by (CA)
Let's Encrypt
Subject
advanced-appliances.co.nz
Valid from
Jun 30, 2026
Valid until
Sep 28, 2026 (59 days remaining)
Public key
RSA 2048-bit
Serial
0532F4D904429267CC12F844BB5F85478F07
SHA-256 fingerprint
46:63:24:59:71:29:59:CD:02:93:B9:B8:0C:87:D1:1A:C4:21:45:7B:C7:15:AC:D0:19:B3:48:8B:0A:89:07:96
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (4)
*.advanced-appliances.co.nz, aas-nz.com, advanced-appliances.co.nz, www.aas-nz.com

Certificate Authority Authorization (CAA)

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

Never get surprised by aas-nz.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch aas-nz.com continuously, notifying you the moment anything moves across all three signals:

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, DNSSEC, CNAME 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.