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 · 221 ms

HostCertsFirst seenLast seen
soderbergpartners.nl 11 2025-11-06 2026-09-02
*.soderbergpartners.nl 1 2025-11-06 2025-11-06
mailing.soderbergpartners.nl 1 2025-11-21 2025-11-21
blog.soderbergpartners.nl 6 2026-04-25 2026-08-21
track.soderbergpartners.nl 5 2026-05-29 2026-09-26
servicedesk.soderbergpartners.nl 2 2026-09-18 2026-09-18
mail.soderbergpartners.nl 8 2026-04-24 2026-08-20
info.soderbergpartners.nl 11 2026-04-24 2026-08-20
salaris.soderbergpartners.nl 5 2026-05-30 2026-09-25
www.soderbergpartners.nl 9 2026-05-18 2026-09-13

Programmatic access: API GET /v1/hosts/soderbergpartners.nl (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.nl.