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.

19 hosts · 194 ms

HostCertsFirst seenLast seen
amiami.jp 2 2025-07-11 2026-07-21
*.amiami.jp 2 2025-07-11 2026-07-21
media.amiami.jp 15 2026-04-29 2026-08-29
realstore.amiami.jp 15 2026-05-13 2026-09-25
img.amiami.jp 10 2026-04-21 2026-08-17
kujistg.amiami.jp 5 2026-04-22 2026-08-31
kuji.amiami.jp 1 2025-12-25 2025-12-25
special.amiami.jp 8 2026-04-21 2026-08-17
form.amiami.jp 1 2026-06-02 2026-06-02
promotion.amiami.jp 1 2026-06-02 2026-06-02
news.amiami.jp 14 2026-04-12 2026-08-18
product.amiami.jp 12 2026-04-13 2026-09-16
img-test.amiami.jp 12 2026-04-19 2026-08-16
jp-test.amiami.jp 10 2026-04-19 2026-08-15
slist-jp-test.amiami.jp 10 2026-04-19 2026-08-15
www-jp-test.amiami.jp 12 2026-04-20 2026-08-17
slist.amiami.jp 8 2026-04-19 2026-08-15
a8cv.amiami.jp 7 2026-05-12 2026-09-09
www.amiami.jp 12 2026-04-20 2026-08-17

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