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 · 333 ms

HostCertsFirst seenLast seenDNS
mangaplaza.com 1 2026-06-16 2026-06-16 ok
*.mangaplaza.com 1 2026-06-16 2026-06-16 —
ad.mangaplaza.com 2 2026-03-05 2026-07-21 ok
server.mangaplaza.com 3 2026-05-17 2026-09-02 ok

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