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.

6 hosts · 269 ms

HostCertsFirst seenLast seenDNS
taongafarm.com 13 2026-04-30 2026-09-19 ok
*.taongafarm.com 14 2026-04-30 2026-09-19 —
*.eu2.taongafarm.com 2 2026-08-27 2026-08-27 —
us2-cdn.taongafarm.com 4 2026-07-13 2026-09-17 ok
eu2-cdn.taongafarm.com 4 2026-07-13 2026-09-17 ok
support.taongafarm.com 5 2026-06-04 2026-10-02 ok

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