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.

12 hosts · 267 ms

HostCertsFirst seenLast seenDNS
m1.email.kotak.in 3 2026-04-26 2026-09-26 ok
res1.email.kotak.in 5 2026-04-26 2026-09-26 ok
t1.email.kotak.in 2 2026-04-26 2026-09-26 ok
m2.email.kotak.in 3 2026-04-26 2026-09-26 ok
res2.email.kotak.in 5 2026-04-26 2026-09-26 ok
t2.email.kotak.in 2 2026-04-26 2026-09-26 ok
m3.email.kotak.in 3 2026-04-26 2026-09-26 ok
res3.email.kotak.in 5 2026-04-26 2026-09-26 ok
t3.email.kotak.in 2 2026-04-26 2026-09-26 ok
m.email.kotak.in 3 2026-04-26 2026-09-26 ok
res.email.kotak.in 5 2026-04-26 2026-09-26 ok
t.email.kotak.in 2 2026-04-26 2026-09-26 ok

Programmatic access, with DNS A records: API GET /v1/hosts/email.kotak.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/email.kotak.in.