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.

14 hosts · 300 ms

HostCertsFirst seenLast seenDNS
langehair.com 16 2026-05-16 2026-09-24 ok
experience.langehair.com 5 2026-05-20 2026-09-17 ok
capig.langehair.com 2 2026-01-07 2026-01-07 ok
*.capig.langehair.com 1 2026-01-07 2026-01-07 —
2a57j78hsrstljvqlux8inqlkmoufug.capig.langehair.com 1 2026-01-07 2026-01-07 nxdomain
k.langehair.com 2 2026-03-24 2026-08-24 ok
mmbtp.langehair.com 13 2026-05-19 2026-09-14 ok
returns.langehair.com 13 2025-07-31 2026-09-11 ok
t.langehair.com 7 2026-04-22 2026-09-24 ok
account.langehair.com 15 2026-04-15 2026-09-26 ok
support.langehair.com 2 2026-03-03 2026-07-19 ok
www.langehair.com 13 2026-05-15 2026-09-24 ok
relay.langehair.com 2 2025-07-20 2026-06-20 ok
sentry.langehair.com 2 2025-07-12 2026-06-12 ok

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