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.

5 hosts · 321 ms

HostCertsFirst seenLast seenDNS
swissquote.eu 3 2025-08-15 2026-09-04 ok
*.swissquote.eu 3 2025-08-15 2026-09-04 —
trade.swissquote.eu 1 2026-03-13 2026-03-13 ok
pre.swissquote.eu 1 2026-01-28 2026-01-28 nxdomain
*.pre.swissquote.eu 1 2026-01-28 2026-01-28 —

Programmatic access, with DNS A records: API GET /v1/hosts/swissquote.eu (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/swissquote.eu.