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 · 251 ms

HostCertsFirst seenLast seenDNS
bandh.com 1 2025-12-18 2025-12-18 ok
link.bandh.com 5 2026-05-30 2026-09-27 ok
www.bandh.com 1 2025-12-18 2025-12-18 ok

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