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 lift-off.ca

Valid
Issued by (CA)
Let's Encrypt
Subject
lift-off.ca
Valid from
Aug 30, 2026
Valid until
Nov 28, 2026 (40 days remaining)
Public key
EC 256-bit
Serial
0528F17EF5140631AB010311C2D53E310F1E
SHA-256 fingerprint
EF:EE:EF:D2:60:05:52:95:A5:AF:BB:5C:63:10:75:DC:E1:21:1A:16:A9:F8:A0:78:23:A0:52:0E:F1:6C:6D:90
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
*.lift-off.ca, lift-off.ca

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 23, 2026.

Never get surprised by lift-off.ca's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch lift-off.ca 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.