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 · 271 ms

HostCertsFirst seenLast seen
soderbergpartners.com 1 2025-12-12 2025-12-12
*.soderbergpartners.com 1 2025-12-12 2025-12-12
e.soderbergpartners.com 4 2026-04-12 2026-09-11
track.soderbergpartners.com 5 2026-05-03 2026-08-31
servicedesk.soderbergpartners.com 13 2026-05-30 2026-09-26
portal.soderbergpartners.com 10 2026-04-20 2026-08-16
claim.soderbergpartners.com 3 2026-05-12 2026-08-14
optimum.soderbergpartners.com 4 2026-04-12 2026-08-23
tiedotteet.soderbergpartners.com 5 2026-05-26 2026-09-23
claim.test.soderbergpartners.com 3 2026-05-12 2026-08-14

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