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.

7 hosts · 304 ms

HostCertsFirst seenLast seenDNS
dyme.app 38 2026-04-21 2026-09-29 ok
*.dyme.app 32 2026-05-08 2026-09-29 —
web.dyme.app 6 2026-04-21 2026-08-17 ok
*.web.dyme.app 6 2026-04-21 2026-08-17 —
api.dyme.app 3 2025-08-20 2026-07-28 ok
*.api.dyme.app 10 2026-05-08 2026-09-03 —
onelink.dyme.app 12 2026-05-03 2026-08-29 ok

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