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.

16 hosts · 270 ms

HostCertsFirst seenLast seenDNS
gqjapan.jp 5 2025-11-19 2026-07-01 ok
*.gqjapan.jp 6 2025-11-19 2026-07-01 —
c2.gqjapan.jp 5 2025-12-29 2025-12-29 ok
media.gqjapan.jp 5 2025-07-30 2026-08-26 ok
stag-media.gqjapan.jp 5 2025-07-30 2026-08-26 ok
c.gqjapan.jp 5 2025-12-29 2025-12-29 ok
qc.gqjapan.jp 10 2025-09-23 2026-08-24 ok
ssc.gqjapan.jp 1 2026-02-11 2026-02-11 ok
interactive.gqjapan.jp 1 2026-06-30 2026-06-30 ok
permutive.gqjapan.jp 4 2026-04-16 2026-09-07 ok
stag.gqjapan.jp 1 2026-02-05 2026-02-05 ok
interactive-stag.gqjapan.jp 2 2026-06-17 2026-06-18 ok
reffect.stg.gqjapan.jp 2 2025-07-29 2026-06-27 ok
shop.gqjapan.jp 15 2026-04-13 2026-09-26 ok
events.gqjapan.jp 5 2026-05-14 2026-09-11 ok
reffect.dev.gqjapan.jp 2 2025-07-29 2026-06-27 ok

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