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.

4 hosts · 286 ms

HostCertsFirst seenLast seenDNS
image.comunicaciones.iberia.com 2 2025-09-22 2025-09-22 ok
click.comunicaciones.iberia.com 3 2025-09-04 2026-08-24 ok
tus.comunicaciones.iberia.com 3 2025-09-04 2026-08-22 ok
view.comunicaciones.iberia.com 3 2025-09-04 2026-08-24 ok

Programmatic access, with DNS A records: API GET /v1/hosts/comunicaciones.iberia.com (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/comunicaciones.iberia.com.