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.

7 hosts · 247 ms

HostCertsFirst seenLast seenDNS
popularenlinea.com.do 1 2026-05-21 2026-05-21 ok
*.popularenlinea.com.do 20 2026-02-12 2026-08-17 —
qa.popularenlinea.com.do 2 2026-08-28 2026-08-28 nodata
solicitudes.popularenlinea.com.do 2 2026-02-24 2026-02-24 ok
www.solicitudes.popularenlinea.com.do 2 2026-02-24 2026-02-24 nxdomain
dev.popularenlinea.com.do 2 2026-08-28 2026-08-28 nodata
www.popularenlinea.com.do 1 2026-05-21 2026-05-21 ok

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