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 · 301 ms

HostCertsFirst seenLast seenDNS
homewardmortgage.com 9 2026-05-19 2026-09-14 ok
newbuild.homewardmortgage.com 6 2026-04-28 2026-08-24 ok
mta-sts.homewardmortgage.com 3 2026-04-23 2026-09-12 ok
www.homewardmortgage.com 8 2026-05-03 2026-08-29 ok
legacy.homewardmortgage.com 5 2026-05-01 2026-08-21 ok
apply.homewardmortgage.com 2 2026-05-01 2026-09-26 ok

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