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.

6 hosts · 264 ms

HostCertsFirst seenLast seenDNS
blh.com.do 1 2026-04-14 2026-04-14 ok
*.blh.com.do 1 2026-04-14 2026-04-14 —
www2.blh.com.do 15 2026-04-15 2026-08-28 ok
blogvisaiberia.blh.com.do 20 2026-04-26 2026-08-22 ok
ep.blh.com.do 1 2026-06-01 2026-06-01 ok
www.blh.com.do 13 2026-04-28 2026-08-24 ok

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