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.

6 hosts · 284 ms

HostCertsFirst seenLast seenDNS
babytrend.com 39 2026-04-16 2026-09-28 ok
*.babytrend.com 24 2026-04-16 2026-09-22 —
cg.babytrend.com 5 2026-05-20 2026-09-17 ok
respiro.babytrend.com 5 2026-05-12 2026-08-31 ok
account.babytrend.com 7 2026-04-18 2026-08-28 ok
www.babytrend.com 13 2026-05-17 2026-09-26 ok

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