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 · 328 ms

HostCertsFirst seenLast seenDNS
superhome.com.cy 5 2026-05-15 2026-07-29 ok
hr.superhome.com.cy 1 2026-04-06 2026-04-06 ok
www.hr.superhome.com.cy 1 2026-04-06 2026-04-06 nxdomain
www.superhome.com.cy 5 2026-05-15 2026-07-29 ok

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