Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

11 hosts · 316 ms

HostCertsFirst seenLast seenDNS
titlis.ch 6 2025-09-11 2026-10-05 ok
*.titlis.ch 2 2025-09-11 2026-10-05 —
yawave.titlis.ch 5 2026-05-05 2026-09-02 ok
shop.titlis.ch 5 2026-05-09 2026-09-08 ok
assets.titlis.ch 8 2026-05-08 2026-09-04 ok
friday.grandopeningnight.titlis.ch 1 2026-04-18 2026-04-18 ok
www.friday.grandopeningnight.titlis.ch 1 2026-04-18 2026-04-18 ok
thursday.grandopeningnight.titlis.ch 1 2026-04-17 2026-04-17 ok
www.thursday.grandopeningnight.titlis.ch 1 2026-04-17 2026-04-17 ok
int.titlis.ch 5 2026-04-28 2026-08-26 ok
www.titlis.ch 4 2026-04-20 2026-08-22 ok

Programmatic access, with DNS A records: API GET /v1/hosts/titlis.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/titlis.ch.