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 · 257 ms

HostCertsFirst seenLast seenDNS
cloud.e.emirates.email 3 2026-03-07 2026-08-10 ok
image.e.emirates.email 5 2025-06-28 2026-08-31 ok
click.e.emirates.email 3 2026-03-07 2026-08-08 ok
view.e.emirates.email 3 2026-03-03 2026-08-07 ok

Programmatic access, with DNS A records: API GET /v1/hosts/e.emirates.email (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/e.emirates.email.