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.

5 hosts · 276 ms

HostCertsFirst seenLast seen
track.sl.kingsbarnca.com 7 2026-04-21 2026-08-19
rvp.kingsbarnca.com 3 2026-02-20 2026-10-03
www.kingsbarnca.com 5 2026-04-27 2026-09-24
notify.kingsbarnca.com 2 2026-09-14 2026-09-17
*.notify.kingsbarnca.com 2 2026-09-14 2026-09-17

Programmatic access: API GET /v1/hosts/kingsbarnca.com (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/kingsbarnca.com.