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.

8 hosts · 309 ms

HostCertsFirst seenLast seenDNS
distantjourneys.com 26 2026-04-17 2026-09-26 ok
*.distantjourneys.com 15 2026-05-14 2026-09-26 —
data.distantjourneys.com 4 2026-06-05 2026-09-24 ok
itineraries.distantjourneys.com 8 2026-04-17 2026-08-13 ok
*.itineraries.distantjourneys.com 8 2026-04-17 2026-08-13 —
emails.distantjourneys.com 20 2026-05-28 2026-09-23 ok
www.distantjourneys.com 3 2026-09-14 2026-09-14 ok
*.www.distantjourneys.com 3 2026-09-14 2026-09-14 —

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