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 · 324 ms

HostCertsFirst seenLast seenDNS
bseindia.in 1 2026-01-02 2026-01-02 ok
*.bseindia.in 1 2026-01-02 2026-01-02 —
tracking.ib40735.bseindia.in 5 2026-05-31 2026-09-26 ok
tracker.bseindia.in 1 2026-04-24 2026-04-24 ok
www.bseindia.in 1 2026-01-02 2026-01-02 ok
delivery.bseindia.in 3 2026-05-21 2026-09-05 ok

Programmatic access, with DNS A records: API GET /v1/hosts/bseindia.in (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/bseindia.in.