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.

10 hosts · 261 ms

HostCertsFirst seenLast seen
natpat.com 22 2026-04-14 2026-09-26
*.natpat.com 9 2026-05-05 2026-09-26
anvhe.natpat.com 11 2026-04-24 2026-08-20
raise.natpat.com 15 2026-05-02 2026-09-11
lk-stg.natpat.com 5 2026-06-01 2026-09-28
loolaroo.natpat.com 15 2026-05-05 2026-09-11
au.natpat.com 15 2026-04-19 2026-10-01
www.au.natpat.com 18 2026-04-18 2026-10-01
dev.natpat.com 13 2026-04-15 2026-10-04
www.natpat.com 15 2026-04-15 2026-09-25

Programmatic access: API GET /v1/hosts/natpat.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/natpat.com.