Find every subdomain
of a domain.

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

7 hosts · 241 ms

HostCertsFirst seenLast seenDNS
inbeat.agency 20 2026-04-10 2026-09-16 ok
*.inbeat.agency 9 2026-04-10 2026-09-16 —
ugc.inbeat.agency 5 2026-05-06 2026-09-07 ok
clerk.ugc.inbeat.agency 10 2026-05-05 2026-08-31 ok
accounts.ugc.inbeat.agency 8 2026-05-05 2026-09-01 ok
creators.inbeat.agency 4 2026-04-20 2026-08-23 ok
www.inbeat.agency 7 2026-05-19 2026-09-14 ok

Programmatic access, with DNS A records: API GET /v1/hosts/inbeat.agency (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/inbeat.agency.