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.

3 hosts · 254 ms

HostCertsFirst seenLast seenDNS
gran.com 16 2026-05-08 2026-09-25 ok
*.gran.com 16 2026-05-08 2026-09-25 —
vantagens.gran.com 1 2026-02-05 2026-02-05 ok

Programmatic access, with DNS A records: API GET /v1/hosts/gran.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/gran.com.