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.

13 hosts · 251 ms

HostCertsFirst seenLast seenDNS
housejet.com 19 2026-04-17 2026-09-14 ok
*.housejet.com 9 2026-04-17 2026-09-13 —
nxlead.housejet.com 4 2026-06-07 2026-10-06 servfail
soldbyjohnandyani.housejet.com 5 2026-04-28 2026-08-25 ok
api.housejet.com 5 2026-04-11 2026-10-07 servfail
sapi.housejet.com 6 2026-04-11 2026-10-07 servfail
join.housejet.com 9 2026-04-15 2026-09-15 ok
go.housejet.com 13 2026-05-03 2026-09-15 servfail
hr.housejet.com 5 2026-04-11 2026-10-07 ok
success.housejet.com 1 2026-08-28 2026-08-28 ok
www.housejet.com 10 2026-04-17 2026-09-14 servfail
my.housejet.com 4 2026-04-12 2026-08-09 ok
community.housejet.com 12 2026-05-01 2026-08-28 ok

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