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.

5 hosts · 246 ms

HostCertsFirst seenLast seenDNS
auth.asia.bidvmetlife.vn 9 2025-07-31 2026-08-15 ok
dev.int-auth.asia.bidvmetlife.vn 2 2026-08-04 2026-08-04 nxdomain
qa.auth.asia.bidvmetlife.vn 8 2026-01-14 2026-09-10 nxdomain
dev.auth.asia.bidvmetlife.vn 10 2026-01-14 2026-08-04 nxdomain
e.bidvmetlife.vn 10 2025-07-31 2026-09-29 ok

Programmatic access, with DNS A records: API GET /v1/hosts/bidvmetlife.vn (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/bidvmetlife.vn.