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 · 199 ms

HostCertsFirst seenLast seenDNS
afipopular.com.do 44 2025-08-06 2026-10-02 ok
*.afipopular.com.do 41 2026-02-12 2026-10-02 —
api.afipopular.com.do 1 2026-05-13 2026-05-13 ok
www.afipopular.com.do 3 2025-08-06 2026-07-16 ok

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