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.

12 hosts · 257 ms

HostCertsFirst seenLast seenDNS
ledgy.com 16 2026-04-27 2026-09-14 ok
*.ledgy.com 7 2026-04-27 2026-09-14 —
rto-prod.ledgy.com 2 2026-07-03 2026-07-07 ok
demo.ledgy.com 3 2026-04-29 2026-08-17 ok
help.ledgy.com 21 2026-06-03 2026-09-29 ok
app.ledgy.com 3 2026-05-04 2026-08-21 ok
docs.ledgy.com 5 2026-05-04 2026-09-01 ok
resources.ledgy.com 10 2026-04-18 2026-08-14 ok
trust.ledgy.com 11 2026-05-25 2026-09-20 ok
www.ledgy.com 10 2026-05-04 2026-08-30 ok
track.ctx.ledgy.com 4 2026-04-17 2026-08-15 ok
community.ledgy.com 8 2026-04-21 2026-08-17 ok

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