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 · 246 ms

HostCertsFirst seenLast seenDNS
vention.cc 11 2026-05-09 2026-09-11 ok
*.vention.cc 11 2026-05-09 2026-09-11 —
hr.vention.cc 10 2026-05-08 2026-09-05 ok
support.vention.cc 10 2026-05-05 2026-09-02 ok

Programmatic access, with DNS A records: API GET /v1/hosts/vention.cc (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/vention.cc.