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.

13 hosts · 273 ms

HostCertsFirst seenLast seen
geneveid.ch 1 2026-05-21 2026-05-21
*.geneveid.ch 1 2026-05-21 2026-05-21
tim.geneveid.ch 1 2025-10-27 2025-10-27
sse.tim.geneveid.ch 1 2025-10-27 2025-10-27
api.tim.geneveid.ch 1 2025-10-27 2025-10-27
bo.tim.geneveid.ch 1 2025-10-27 2025-10-27
my.tim.geneveid.ch 1 2025-10-27 2025-10-27
mta-sts.geneveid.ch 4 2026-03-24 2026-09-22
timtest.geneveid.ch 4 2025-07-24 2026-08-21
sse.timtest.geneveid.ch 4 2025-07-24 2026-08-21
api.timtest.geneveid.ch 4 2025-07-24 2026-08-21
bo.timtest.geneveid.ch 4 2025-07-24 2026-08-21
my.timtest.geneveid.ch 4 2025-07-24 2026-08-21

Programmatic access: API GET /v1/hosts/geneveid.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/geneveid.ch.