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 · 327 ms

HostCertsFirst seenLast seen
authenteak.com 2 2025-08-22 2026-07-23
*.authenteak.com 2 2025-08-22 2026-07-23
beta.authenteak.com 5 2026-08-06 2026-08-12
e.authenteak.com 6 2026-05-04 2026-08-30
*.e.authenteak.com 6 2026-05-04 2026-08-30
trk.e.authenteak.com 5 2026-05-08 2026-09-05
secure.authenteak.com 8 2026-04-22 2026-08-18
staging-secure.authenteak.com 1 2026-06-06 2026-06-06
analytics.authenteak.com 3 2026-04-30 2026-08-16
test-checkout.authenteak.com 4 2026-04-20 2026-09-07
snbx.authenteak.com 1 2026-03-18 2026-03-18
sandbox.authenteak.com 3 2026-02-16 2026-05-06
*.sandbox.authenteak.com 1 2026-02-16 2026-02-16

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