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.

12 hosts · 219 ms

HostCertsFirst seenLast seen
adexpartners.com 25 2025-07-14 2026-09-25
*.adexpartners.com 23 2025-07-15 2026-09-25
ai-usage.adexpartners.com 1 2026-09-29 2026-09-29
vantage.adexpartners.com 1 2026-09-29 2026-09-29
icon.adexpartners.com 6 2026-06-12 2026-10-08
mcp.adexpartners.com 4 2026-02-03 2026-09-18
sf-dq.adexpartners.com 1 2026-09-29 2026-09-29
innovation-radar.adexpartners.com 1 2026-09-30 2026-09-30
management.adexpartners.com 1 2026-09-29 2026-09-29
werkstatt.adexpartners.com 1 2026-09-29 2026-09-29
docs.skillguru.adexpartners.com 9 2026-05-26 2026-09-21
www.adexpartners.com 2 2025-07-14 2026-05-15

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