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.

5 hosts · 317 ms

HostCertsFirst seenLast seenDNS
skinnymixes.com 15 2026-05-16 2026-09-24 ok
store.skinnymixes.com 11 2026-05-16 2026-09-26 ok
trk.skinnymixes.com 2 2026-09-04 2026-09-04 ok
www.skinnymixes.com 15 2026-05-17 2026-09-26 ok
privacy.skinnymixes.com 7 2026-05-23 2026-09-22 ok

Programmatic access, with DNS A records: API GET /v1/hosts/skinnymixes.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/skinnymixes.com.