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 · 322 ms

HostCertsFirst seenLast seenDNS
folepublishing.com 1 2026-05-10 2026-05-10 ok
music.folepublishing.com 6 2026-05-15 2026-09-12 ok
dashboard.folepublishing.com 1 2025-11-18 2025-11-18 ok
www.folepublishing.com 1 2026-05-10 2026-05-10 ok

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