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.

5 hosts · 393 ms

HostCertsFirst seenLast seenDNS
pub.e.economist.com 1 2025-11-04 2025-11-04 ok
image.e.economist.com 3 2026-01-08 2026-06-01 ok
click.e.economist.com 2 2026-02-26 2026-07-31 ok
pages.e.economist.com 2 2026-02-26 2026-07-30 ok
view.e.economist.com 2 2026-02-26 2026-07-31 ok

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