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 · 260 ms

HostCertsFirst seenLast seenDNS
klingspor.com.mx 5 2026-06-10 2026-09-22 ok
mx-link.klingspor.com.mx 6 2026-04-19 2026-08-17 ok
www.klingspor.com.mx 5 2026-06-10 2026-09-22 ok

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