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.

9 hosts · 345 ms

HostCertsFirst seenLast seenDNS
narscosmetics.jp 27 2026-05-25 2026-09-20 ok
x5r8n1z6.narscosmetics.jp 3 2026-04-17 2026-09-17 ok
staging.narscosmetics.jp 14 2026-04-25 2026-09-12 ok
cloud.mm.narscosmetics.jp 3 2026-03-13 2026-08-14 ok
image.mm.narscosmetics.jp 7 2026-03-13 2026-09-02 ok
click.mm.narscosmetics.jp 3 2026-03-13 2026-08-14 ok
view.mm.narscosmetics.jp 3 2026-03-13 2026-08-14 ok
development.narscosmetics.jp 21 2025-06-17 2026-09-12 ok
www.narscosmetics.jp 20 2026-04-24 2026-09-20 ok

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