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.

3 hosts · 201 ms

HostCertsFirst seenLast seen
indomio.es 2 2025-07-29 2026-07-20
*.indomio.es 2 2025-07-29 2026-07-20
cgapigw.indomio.es 3 2026-04-26 2026-08-14

Programmatic access: API GET /v1/hosts/indomio.es (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/indomio.es.