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.

6 hosts · 236 ms

HostCertsFirst seenLast seen
d.p.sheplers.com 12 2026-05-04 2026-08-30
e.p.sheplers.com 12 2026-05-04 2026-08-30
se.p.sheplers.com 10 2026-05-03 2026-08-29
mg.p.sheplers.com 4 2026-04-17 2026-08-15
preferences.p.sheplers.com 14 2026-05-08 2026-09-04
forms.p.sheplers.com 6 2026-04-18 2026-08-15

Programmatic access: API GET /v1/hosts/p.sheplers.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/p.sheplers.com.