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.

7 hosts · 216 ms

HostCertsFirst seenLast seenDNS
peopleplus.ch 9 2026-05-04 2026-10-06 ok
*.peopleplus.ch 7 2026-06-10 2026-10-06 —
garlic.peopleplus.ch 2 2025-09-06 2026-09-07 ok
www.garlic.peopleplus.ch 2 2025-09-06 2026-09-07 nxdomain
certificate.peopleplus.ch 7 2026-05-26 2026-09-03 ok
mta-sts.peopleplus.ch 5 2026-04-25 2026-08-21 ok
www.peopleplus.ch 4 2026-05-06 2026-05-06 ok

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