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 · 335 ms

HostCertsFirst seenLast seenDNS
cloud.e.annexus.com 2 2025-10-06 2026-09-23 ok
image.e.annexus.com 5 2026-10-02 2026-10-06 ok
click.e.annexus.com 2 2025-10-07 2026-09-24 ok
view.e.annexus.com 4 2025-10-07 2026-09-24 ok

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