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.

15 hosts · 309 ms

HostCertsFirst seenLast seenDNS
jobhouse.jp 19 2026-02-13 2026-10-06 ok
*.jobhouse.jp 18 2025-12-14 2026-10-06 —
lp2.jobhouse.jp 14 2026-05-30 2026-09-25 ok
eylnhf.jobhouse.jp 3 2026-05-09 2026-09-10 ok
batch.jobhouse.jp 2 2026-02-13 2026-02-13 nodata
indeed-api.jobhouse.jp 4 2025-07-23 2026-06-23 ok
nativeapp-api.jobhouse.jp 2 2026-01-27 2026-01-28 ok
help.jobhouse.jp 5 2026-04-30 2026-08-28 ok
manager.jobhouse.jp 2 2025-12-09 2025-12-09 ok
assets.jobhouse.jp 2 2026-04-03 2026-09-03 ok
agent.jobhouse.jp 2 2026-02-13 2026-02-13 ok
event.jobhouse.jp 4 2026-04-16 2026-08-14 ok
cdn-new.jobhouse.jp 2 2026-04-11 2026-09-11 ok
www.jobhouse.jp 2 2026-02-13 2026-02-13 ok
biz.jobhouse.jp 6 2026-04-18 2026-09-30 ok

Programmatic access, with DNS A records: API GET /v1/hosts/jobhouse.jp (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/jobhouse.jp.