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.

8 hosts · 220 ms

HostCertsFirst seenLast seen
strike-advisory.ch 19 2026-05-21 2026-09-30
*.strike-advisory.ch 17 2026-05-21 2026-09-30
search.strike-advisory.ch 1 2026-10-02 2026-10-02
api.strike-advisory.ch 1 2026-07-27 2026-07-27
go.strike-advisory.ch 4 2026-04-20 2026-08-22
bs.strike-advisory.ch 2 2026-10-02 2026-10-02
dev.strike-advisory.ch 5 2026-05-03 2026-08-31
www.strike-advisory.ch 2 2026-05-28 2026-07-27

Programmatic access: API GET /v1/hosts/strike-advisory.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/strike-advisory.ch.