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.

8 hosts · 362 ms

HostCertsFirst seenLast seenDNS
cbhv.com 16 2026-04-12 2026-09-30 ok
*.cbhv.com 10 2026-04-12 2026-09-30 —
qserver1.cbhv.com 4 2025-08-20 2026-08-06 nodata
www.qserver1.cbhv.com 4 2025-08-20 2026-08-06 nxdomain
ems1.cbhv.com 3 2025-10-16 2026-01-13 ok
cbhvvpn.cbhv.com 4 2026-03-06 2026-09-08 ok
hbs.cbhv.com 4 2026-02-27 2026-08-14 ok
www.cbhv.com 10 2026-05-03 2026-08-12 ok

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