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 · 357 ms

HostCertsFirst seenLast seenDNS
kahalaresort.com 16 2026-05-14 2026-09-09 ok
ww2.kahalaresort.com 3 2026-04-12 2026-04-12 —
dining.kahalaresort.com 8 2026-06-15 2026-08-24 ok
connection.kahalaresort.com 9 2026-04-20 2026-09-17 ok
jp.kahalaresort.com 14 2026-05-13 2026-09-08 ok
shop.kahalaresort.com 1 2026-02-13 2026-02-13 ok
kr.kahalaresort.com 12 2026-05-13 2026-09-08 ok
reservations.kahalaresort.com 37 2026-05-08 2026-10-01 ok
www.kahalaresort.com 10 2026-05-14 2026-09-09 ok

Programmatic access, with DNS A records: API GET /v1/hosts/kahalaresort.com (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/kahalaresort.com.