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.

25 hosts · 314 ms

HostCertsFirst seenLast seenDNS
soundtrack.io 9 2025-07-16 2026-09-06 ok
*.soundtrack.io 4 2025-07-16 2026-08-11 —
remote1.soundtrack.io 20 2026-05-10 2026-09-07 ok
brand.soundtrack.io 25 2026-04-12 2026-09-18 ok
store.soundtrack.io 23 2026-04-09 2026-10-03 ok
uk-store.soundtrack.io 13 2026-05-08 2026-09-18 ok
open-store.soundtrack.io 12 2026-04-23 2026-08-19 ok
us-store.soundtrack.io 12 2026-05-02 2026-09-12 ok
api-staging.soundtrack.io 11 2026-05-12 2026-09-11 ok
app-staging.soundtrack.io 18 2026-04-21 2026-08-20 ok
www-staging.soundtrack.io 6 2026-05-05 2026-08-31 ok
ws-legacy-staging.soundtrack.io 5 2026-04-28 2026-08-26 ok
api.soundtrack.io 11 2026-05-12 2026-09-12 ok
stream.soundtrack.io 17 2026-05-22 2026-09-19 ok
help.soundtrack.io 5 2026-04-22 2026-08-20 ok
app.soundtrack.io 20 2026-04-21 2026-08-18 ok
signup.soundtrack.io 3 2026-05-01 2026-08-19 ok
developer.soundtrack.io 5 2026-05-08 2026-09-28 ok
careers.soundtrack.io 10 2026-04-14 2026-09-24 ok
status.soundtrack.io 5 2026-04-23 2026-08-20 ok
get.soundtrack.io 10 2026-05-15 2026-09-10 ok
us-store-account.soundtrack.io 1 2026-04-13 2026-04-13 nxdomain
www.soundtrack.io 8 2026-04-22 2026-08-19 ok
display.soundtrack.io 18 2026-04-21 2026-08-19 ok
ws-legacy.soundtrack.io 5 2026-05-20 2026-09-17 ok

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