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.

5 hosts · 256 ms

HostCertsFirst seenLast seen
screenrant.com 9 2026-04-12 2026-09-09
*.screenrant.com 19 2026-04-12 2026-09-24
t13.screenrant.com 3 2026-06-08 2026-08-04
sli.screenrant.com 2 2026-02-28 2026-07-16
click.newsletter.screenrant.com 2 2026-08-17 2026-08-17

Programmatic access: API GET /v1/hosts/screenrant.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/screenrant.com.