Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

10 hosts · 251 ms

HostCertsFirst seenLast seen
carthagea.com 1 2026-02-10 2026-02-10
employee.carthagea.com 1 2026-02-10 2026-02-10
streaming.carthagea.com 1 2026-02-10 2026-02-10
monitoring.carthagea.com 1 2026-09-03 2026-09-03
blog.carthagea.com 1 2026-02-10 2026-02-10
cam.carthagea.com 4 2026-06-05 2026-10-04
natakassam.carthagea.com 10 2026-06-25 2026-09-02
dir.carthagea.com 1 2026-02-10 2026-02-10
intranet.carthagea.com 5 2026-05-24 2026-09-21
dev.carthagea.com 3 2026-06-19 2026-08-19

Programmatic access: API GET /v1/hosts/carthagea.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/carthagea.com.