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.

14 hosts · 395 ms

HostCertsFirst seenLast seenDNS
adjoe.io 18 2026-05-28 2026-09-23 ok
playtime-api-reference.adjoe.io 2 2025-07-13 2026-06-13 ok
monetise.adjoe.io 2 2025-12-31 2026-02-04 ok
advertise.adjoe.io 2 2025-12-31 2026-02-04 ok
monetize.adjoe.io 2 2025-12-31 2026-02-04 ok
advertize.adjoe.io 2 2025-12-31 2026-02-04 ok
docs.adjoe.io 2 2026-04-02 2026-09-02 ok
releases.adjoe.io 1 2025-11-12 2025-11-12 ok
pre-releases.adjoe.io 3 2025-09-25 2026-08-26 ok
restaurants.adjoe.io 8 2026-07-20 2026-09-17 ok
status.adjoe.io 5 2026-05-09 2026-09-06 ok
test.adjoe.io 4 2026-06-07 2026-10-05 ok
grow.adjoe.io 2 2026-09-22 2026-09-22 ok
www.adjoe.io 16 2026-05-27 2026-09-22 ok

Programmatic access, with DNS A records: API GET /v1/hosts/adjoe.io (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/adjoe.io.