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.

7 hosts · 240 ms

HostCertsFirst seenLast seen
mobi24.ch 14 2025-09-29 2026-08-31
www2.mobi24.ch 2 2025-10-13 2025-10-13
url635.mobi24.ch 2 2025-11-10 2026-07-10
sip.mobi24.ch 1 2025-07-29 2025-07-29
autodiscover.mobi24.ch 1 2026-03-03 2026-03-03
*.apps.mobi24.ch 1 2026-07-10 2026-07-10
www.mobi24.ch 13 2025-09-29 2026-08-31

Programmatic access: API GET /v1/hosts/mobi24.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/mobi24.ch.