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 · 263 ms

HostCertsFirst seenLast seenDNS
cdslindia.co.in 10 2026-04-15 2026-05-06 nodata
*.cdslindia.co.in 10 2026-04-15 2026-05-06 —
bsdelivery2.cdslindia.co.in 5 2026-04-27 2026-08-25 ok
bsdelivery3.cdslindia.co.in 5 2026-05-19 2026-09-16 ok
elink.cdslindia.co.in 23 2026-05-21 2026-08-26 ok
bsdelivery.cdslindia.co.in 5 2026-04-28 2026-08-27 ok

Programmatic access, with DNS A records: API GET /v1/hosts/cdslindia.co.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/cdslindia.co.in.