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
kimonoinc.com 14 2026-04-25 2026-09-20 ok
*.kimonoinc.com 8 2026-04-25 2026-09-20 —
assets.kimonoinc.com 4 2026-06-29 2026-08-27 ok
www.kimonoinc.com 6 2026-06-23 2026-08-22 ok

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