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.

15 hosts · 166 ms

HostCertsFirst seenLast seen
sapporobeer.jp 4 2025-10-20 2026-07-26
*.sapporobeer.jp 7 2025-09-13 2026-08-15
ybt2.sapporobeer.jp 5 2026-04-12 2026-09-21
cloud.ma.sapporobeer.jp 2 2025-10-13 2026-10-01
image.ma.sapporobeer.jp 5 2026-02-28 2026-09-07
click.ma.sapporobeer.jp 2 2025-10-13 2026-09-30
view.ma.sapporobeer.jp 2 2025-10-13 2026-09-30
sorachi1984-otsumamigp.sapporobeer.jp 7 2026-04-22 2026-08-21
enq.sapporobeer.jp 3 2025-10-28 2026-09-28
analytics.sapporobeer.jp 3 2026-05-20 2026-09-05
thebar-myglass.sapporobeer.jp 3 2026-06-15 2026-08-19
eat.sapporobeer.jp 1 2025-11-20 2025-11-20
dev.eat.sapporobeer.jp 1 2025-11-20 2025-11-20
ybt.sapporobeer.jp 4 2026-06-05 2026-09-21
www.sapporobeer.jp 1 2025-10-20 2025-10-20

Programmatic access: API GET /v1/hosts/sapporobeer.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/sapporobeer.jp.