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.

11 hosts · 223 ms

HostCertsFirst seenLast seen
strauss.ch 5 2026-04-21 2026-10-07
www-qa.strauss.ch 6 2026-05-05 2026-10-07
www-sta.strauss.ch 6 2026-05-05 2026-10-07
presse.strauss.ch 16 2026-05-21 2026-09-30
gutschein.strauss.ch 13 2026-05-01 2026-10-01
mail.gutschein.strauss.ch 1 2026-09-14 2026-09-14
www.gutschein.strauss.ch 13 2026-05-01 2026-10-01
bon.strauss.ch 6 2026-04-26 2026-10-07
help.strauss.ch 7 2026-04-22 2026-09-27
www-dev.strauss.ch 6 2026-05-05 2026-10-07
www.strauss.ch 5 2026-04-21 2026-10-07

Programmatic access: API GET /v1/hosts/strauss.ch (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/strauss.ch.