Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

5 hosts · 194 ms

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HostCertsFirst seenLast seen
discoveryplus.in 1 2025-12-28 2025-12-28
*.discoveryplus.in 20 2025-08-06 2026-08-06
ssa.discoveryplus.in 2 2026-05-26 2026-05-26
links.mail.discoveryplus.in 8 2026-06-14 2026-10-10
links.support.discoveryplus.in 9 2026-06-17 2026-10-13

Programmatic access: API GET /v1/hosts/discoveryplus.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/discoveryplus.in.