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.

4 hosts · 251 ms

HostCertsFirst seenLast seenDNS
lp2.litalico-works.jp 3 2026-05-21 2026-09-08 ok
campaign.litalico-works.jp 10 2026-05-10 2026-09-05 ok
lp.litalico-works.jp 6 2026-05-23 2026-10-02 ok
articles.litalico-works.jp 3 2026-04-30 2026-08-19 ok

Programmatic access, with DNS A records: API GET /v1/hosts/litalico-works.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/litalico-works.jp.