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.

8 hosts · 345 ms

HostCertsFirst seenLast seenDNS
kash.app 10 2026-04-19 2026-09-15 ok
*.kash.app 10 2026-04-19 2026-09-15 —
hola.kash.app 3 2026-07-23 2026-09-20 ok
cuenta.kash.app 2 2026-08-27 2026-08-27 ok
dash.kash.app 1 2026-04-13 2026-04-13 ok
link.kash.app 2 2026-08-12 2026-08-12 ok
test-link.kash.app 2 2026-08-12 2026-08-12 ok
promos.kash.app 2 2026-09-29 2026-09-29 ok

Programmatic access, with DNS A records: API GET /v1/hosts/kash.app (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/kash.app.