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.

28 hosts · 253 ms

HostCertsFirst seenLast seen
gmo.media 28 2025-07-22 2026-10-09
*.gmo.media 3 2025-07-22 2026-09-28
infra.gmo.media 3 2026-07-07 2026-08-04
*.infra.gmo.media 9 2025-08-21 2026-08-28
tomi-test01.infra.gmo.media 3 2026-09-09 2026-09-10
hoge1.infra.gmo.media 8 2026-08-21 2026-08-24
hoge-scenario2.infra.gmo.media 7 2026-09-07 2026-09-10
hoge-scenario3-a.infra.gmo.media 3 2026-09-07 2026-09-08
hogege.infra.gmo.media 4 2026-09-14 2026-09-15
hoge.infra.gmo.media 1 2026-08-10 2026-08-10
hogehogehoge.infra.gmo.media 5 2026-09-14 2026-09-24
hohoge.infra.gmo.media 4 2026-09-14 2026-09-15
hoge-tls9-baseline.infra.gmo.media 1 2026-09-10 2026-09-10
katase.infra.gmo.media 1 2026-05-26 2026-05-26
hoge-scenario1-ng.infra.gmo.media 3 2026-09-07 2026-09-07
test.infra.gmo.media 2 2026-09-13 2026-09-13
hoge-update-test.infra.gmo.media 8 2026-08-27 2026-09-05
hoge-tls9-2-mismatch-test.infra.gmo.media 1 2026-09-10 2026-09-10
redmine.gmo.media 2 2025-06-30 2026-05-29
blog.gmo.media 3 2026-05-22 2026-09-10
affitown.gmo.media 3 2026-05-19 2026-09-07
gifco.gmo.media 7 2026-03-16 2026-10-07
monitor.gmo.media 2 2026-09-02 2026-09-28
repeatas.gmo.media 5 2026-04-23 2026-10-02
nps.gmo.media 2 2025-09-19 2026-08-19
contact.gmo.media 5 2026-04-27 2026-08-25
legal-contact.gmo.media 5 2026-04-27 2026-08-25
www.gmo.media 26 2025-11-03 2026-10-09

Programmatic access: API GET /v1/hosts/gmo.media (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/gmo.media.