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.

4 hosts · 269 ms

HostCertsFirst seenLast seen
cloud.e.affirm.com 2 2025-06-15 2026-06-03
image.e.affirm.com 5 2025-07-16 2026-08-17
click.e.affirm.com 3 2026-02-17 2026-05-07
view.e.affirm.com 2 2026-05-01 2026-10-03

Programmatic access: API GET /v1/hosts/e.affirm.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.affirm.com.