Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

4 hosts · 214 ms

Download CSV
HostCertsFirst seenLast seen
canlift.ca 10 2026-04-28 2026-08-24
clive.canlift.ca 6 2026-05-06 2026-09-01
www.canlift.ca 18 2026-05-06 2026-09-02
pay.canlift.ca 5 2026-07-30 2026-09-27

Programmatic access: API GET /v1/hosts/canlift.ca (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/canlift.ca.