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.

21 hosts · 284 ms

HostCertsFirst seenLast seen
rakuten.com.tw 4 2026-02-27 2026-09-24
*.rakuten.com.tw 4 2026-02-27 2026-09-24
card.rakuten.com.tw 4 2025-09-02 2026-09-10
stg.card.rakuten.com.tw 3 2025-08-14 2026-09-09
link.card.rakuten.com.tw 1 2025-07-23 2025-07-23
www.card.rakuten.com.tw 9 2025-09-02 2026-10-02
api-gateway.marketplace.rakuten.com.tw 21 2025-06-11 2026-08-21
prerelease-api-gateway.marketplace.rakuten.com.tw 24 2025-06-11 2026-08-21
affiliate.rakuten.com.tw 3 2025-09-24 2026-08-20
*.affiliate.rakuten.com.tw 3 2025-09-24 2026-08-20
api.rakuten.com.tw 3 2025-08-21 2026-09-28
*.api.rakuten.com.tw 3 2025-08-21 2026-09-28
corp.rakuten.com.tw 4 2025-09-17 2026-08-25
*.corp.rakuten.com.tw 4 2025-09-17 2026-08-25
rms.rakuten.com.tw 13 2025-09-11 2026-08-21
*.rms.rakuten.com.tw 2 2025-09-11 2026-08-20
monkeys.rakuten.com.tw 3 2026-03-04 2026-08-25
member.insight.rakuten.com.tw 3 2026-04-02 2026-09-04
point.rakuten.com.tw 1 2025-11-11 2025-11-11
support.rakuten.com.tw 5 2026-05-07 2026-09-04
www.rakuten.com.tw 11 2026-03-26 2026-08-21

Programmatic access: API GET /v1/hosts/rakuten.com.tw (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/rakuten.com.tw.