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.

4 hosts · 260 ms

HostCertsFirst seenLast seenDNS
theforkedspoon.com 30 2026-04-15 2026-10-02 ok
*.theforkedspoon.com 6 2026-04-24 2026-10-02 —
5b914c3c377d57533c0af6f4.theforkedspoon.com 8 2026-04-15 2026-08-11 ok
www.theforkedspoon.com 5 2026-05-23 2026-09-20 ok

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