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.

13 hosts · 228 ms

HostCertsFirst seenLast seen
intentamplify.com 4 2026-06-12 2026-08-21
poc.intentamplify.com 5 2026-06-08 2026-10-06
update.intentamplify.com 1 2026-08-17 2026-08-17
staging.intentamplify.com 1 2026-08-14 2026-08-14
cdn.intentamplify.com 4 2026-04-20 2026-08-18
admin.intentamplify.com 5 2026-06-07 2026-10-05
automation.intentamplify.com 1 2026-09-20 2026-09-20
resources.intentamplify.com 4 2026-06-08 2026-10-06
promotions.intentamplify.com 4 2026-06-09 2026-10-07
media-kit.intentamplify.com 4 2026-06-08 2026-10-06
test.intentamplify.com 1 2026-08-15 2026-08-15
qaenv.intentamplify.com 5 2026-05-09 2026-09-06
www.intentamplify.com 4 2026-06-13 2026-08-21

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