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 · 313 ms

HostCertsFirst seenLast seen
pausspa.ca 5 2026-04-25 2026-08-23
formulaire.pausspa.ca 3 2026-06-01 2026-08-29
r.mailbrevo.pausspa.ca 1 2026-09-28 2026-09-28
www.pausspa.ca 5 2026-04-25 2026-08-23

Programmatic access: API GET /v1/hosts/pausspa.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/pausspa.ca.