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.

19 hosts · 289 ms

HostCertsFirst seenLast seenDNS
doxy.me 20 2026-02-27 2026-09-19 ok
*.doxy.me 20 2026-02-27 2026-09-19 —
*.ably.realtime.doxy.me 7 2026-02-04 2026-02-04 —
primary.ably.realtime.doxy.me 7 2026-02-04 2026-02-04 ok
www.upstate.doxy.me 2 2025-06-20 2026-05-20 ok
auth.doxy.me 2 2026-02-19 2026-07-07 ok
feedback.doxy.me 4 2026-06-06 2026-08-30 ok
learn.doxy.me 6 2026-05-04 2026-08-30 ok
shop.doxy.me 11 2026-05-16 2026-09-24 ok
trustcenter.doxy.me 8 2026-04-29 2026-08-24 ok
userpilot-js.doxy.me 2 2025-09-15 2026-08-16 ok
payments.doxy.me 10 2026-04-21 2026-08-17 ok
status.doxy.me 5 2026-04-26 2026-08-23 ok
get.doxy.me 11 2026-04-29 2026-08-26 ok
api.segment.doxy.me 1 2025-11-24 2025-11-24 ok
evs.segment.doxy.me 1 2025-11-24 2025-11-24 ok
api.hotpot.doxy.me 10 2026-04-13 2026-08-10 ok
convex.hotpot.doxy.me 12 2026-04-13 2026-08-09 ok
directory.doxy.me 10 2026-04-16 2026-08-12 ok

Programmatic access, with DNS A records: API GET /v1/hosts/doxy.me (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/doxy.me.