Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

20 hosts · 222 ms

HostCertsFirst seenLast seen
gaijinpot.com 1 2025-11-19 2025-11-19
*.gaijinpot.com 1 2025-11-19 2025-11-19
store.gaijinpot.com 4 2026-04-14 2026-08-12
blog.gaijinpot.com 2 2026-07-14 2026-07-14
health.gaijinpot.com 2 2026-07-14 2026-07-14
work.gaijinpot.com 3 2026-07-14 2026-10-06
travel.gaijinpot.com 3 2026-07-14 2026-10-06
forum.gaijinpot.com 4 2026-04-13 2026-08-11
injapan.gaijinpot.com 1 2026-08-31 2026-08-31
cdn.gaijinpot.com 3 2026-05-21 2026-08-03
s.gaijinpot.com 4 2026-04-13 2026-08-29
jobs.gaijinpot.com 3 2026-06-18 2026-08-27
origin-01-jobs.gaijinpot.com 5 2026-07-06 2026-10-05
static-jobs.gaijinpot.com 2 2026-06-17 2026-06-17
classifieds.gaijinpot.com 4 2026-04-13 2026-08-11
hotels.gaijinpot.com 4 2026-04-14 2026-08-12
apartments.gaijinpot.com 3 2026-06-03 2026-08-12
events.gaijinpot.com 2 2026-07-14 2026-07-14
contact.gaijinpot.com 4 2026-04-13 2026-08-11
study.gaijinpot.com 3 2026-07-14 2026-10-06

Programmatic access: API GET /v1/hosts/gaijinpot.com (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/gaijinpot.com.