Find every subdomain
of a domain.

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

20 hosts · 292 ms

HostCertsFirst seenLast seenDNS
giftmall.co.jp 26 2025-07-24 2026-09-27 ok
*.giftmall.co.jp 27 2025-07-24 2026-09-27 —
mcd.giftmall.co.jp 2 2026-07-17 2026-07-29 ok
*.board.giftmall.co.jp 2 2025-10-28 2026-09-27 —
jaomlf.giftmall.co.jp 2 2026-06-09 2026-08-10 ok
mcagfg.giftmall.co.jp 2 2025-08-20 2026-07-21 ok
msgfg.giftmall.co.jp 4 2026-08-28 2026-08-28 ok
*.msgfg.giftmall.co.jp 4 2026-08-28 2026-08-28 —
catalog.giftmall.co.jp 2 2026-03-13 2026-07-29 ok
web.catalog.giftmall.co.jp 2 2026-02-24 2026-07-12 ok
api.catalog.giftmall.co.jp 2 2026-02-24 2026-07-12 ok
admin.catalog.giftmall.co.jp 2 2026-02-24 2026-07-12 ok
asset.catalog.giftmall.co.jp 2 2026-02-24 2026-07-12 ok
private-asset.catalog.giftmall.co.jp 2 2026-02-24 2026-07-12 ok
api.stg-oiwai-context.giftmall.co.jp 3 2026-04-17 2026-09-17 ok
internal-api.stg-oiwai-context.giftmall.co.jp 3 2026-04-17 2026-09-17 nodata
admin.stg-oiwai-context.giftmall.co.jp 3 2026-04-17 2026-09-17 ok
api.oiwai-context.giftmall.co.jp 3 2025-10-15 2026-09-14 ok
internal-api.oiwai-context.giftmall.co.jp 2 2026-02-28 2026-07-16 nodata
admin.oiwai-context.giftmall.co.jp 3 2025-10-15 2026-09-14 ok

Programmatic access, with DNS A records: API GET /v1/hosts/giftmall.co.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/giftmall.co.jp.