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.

4 hosts · 319 ms

HostCertsFirst seenLast seenDNS
cosmosbank.in 2 2026-05-11 2026-05-29 ok
*.cosmosbank.in 1 2026-05-29 2026-05-29 —
online.cosmosbank.in 3 2026-02-06 2026-07-04 ok
www.cosmosbank.in 1 2026-05-10 2026-05-10 ok

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