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.

22 hosts · 191 ms

Download CSV
HostCertsFirst seenLast seen
clearlake.com 18 2025-07-17 2026-10-13
hub.clearlake.com 2 2025-08-27 2026-07-14
riskhub.clearlake.com 3 2026-06-22 2026-10-14
vendorhub.clearlake.com 1 2026-07-08 2026-07-08
marketplace.clearlake.com 11 2026-06-01 2026-09-28
staging.clearlake.com 10 2026-06-08 2026-10-04
investordeck.clearlake.com 2 2025-08-27 2026-07-14
securemail.clearlake.com 1 2026-07-29 2026-07-29
cost-allocation.clearlake.com 2 2025-11-20 2026-07-14
portfolio.clearlake.com 18 2026-05-21 2026-09-29
cap.clearlake.com 2 2026-08-20 2026-08-20
cms.clearlake.com 8 2026-05-08 2026-09-03
insights.clearlake.com 2 2026-09-01 2026-09-01
tax-extract.clearlake.com 3 2026-06-01 2026-09-23
assetvault.clearlake.com 1 2026-06-26 2026-06-26
hub-test.clearlake.com 2 2025-08-27 2026-07-14
investordeck-test.clearlake.com 2 2025-08-27 2026-07-14
cost-allocation-test.clearlake.com 2 2025-11-20 2026-07-14
tax-extract-test.clearlake.com 2 2026-06-01 2026-09-23
tax-extract-dev.clearlake.com 2 2026-06-01 2026-09-23
www.clearlake.com 7 2025-07-17 2026-10-13
inventory.clearlake.com 1 2026-06-24 2026-06-24

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