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.

11 hosts · 252 ms

HostCertsFirst seenLast seenDNS
cloud9.gg 4 2026-01-07 2026-08-08 ok
*.cloud9.gg 1 2026-01-07 2026-01-07 —
store.cloud9.gg 14 2026-04-19 2026-09-28 ok
desk.cloud9.gg 5 2026-05-14 2026-09-18 ok
antispam.cloud9.gg 3 2026-04-29 2026-08-16 ok
captions.cloud9.gg 4 2026-04-19 2026-09-29 ok
clips.cloud9.gg 3 2026-05-31 2026-09-18 ok
lol-apps.cloud9.gg 3 2026-05-22 2026-08-20 ok
scripts.cloud9.gg 3 2026-05-16 2026-08-29 ok
www.cloud9.gg 2 2026-06-07 2026-08-08 ok
overlay.cloud9.gg 5 2026-04-25 2026-08-27 ok

Programmatic access, with DNS A records: API GET /v1/hosts/cloud9.gg (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/cloud9.gg.