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.

13 hosts · 287 ms

HostCertsFirst seenLast seenDNS
fanspicy.com 36 2026-04-15 2026-09-30 ok
*.fanspicy.com 19 2026-05-10 2026-09-30 —
stage-upload.fanspicy.com 5 2026-05-07 2026-09-04 ok
dev-upload.fanspicy.com 4 2026-04-17 2026-08-15 ok
dev-backend.fanspicy.com 4 2026-04-17 2026-08-15 ok
stage.fanspicy.com 5 2026-05-03 2026-08-31 ok
landing.fanspicy.com 3 2026-05-29 2026-09-24 ok
api.fanspicy.com 2 2026-08-14 2026-08-14 ok
stage-api.fanspicy.com 5 2026-05-05 2026-09-03 ok
stream.fanspicy.com 21 2026-05-06 2026-09-03 ok
support.fanspicy.com 11 2026-04-29 2026-08-27 ok
dev.fanspicy.com 4 2026-04-17 2026-08-15 ok
www.fanspicy.com 17 2026-04-15 2026-08-14 ok

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