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.

6 hosts · 252 ms

HostCertsFirst seenLast seen
newbalanceteam.com 1 2026-09-14 2026-09-14
beta.newbalanceteam.com 26 2026-06-04 2026-10-01
img.email.newbalanceteam.com 14 2026-05-08 2026-09-03
link.email.newbalanceteam.com 15 2026-05-02 2026-08-30
www.newbalanceteam.com 14 2026-05-12 2026-09-07
legacy.newbalanceteam.com 10 2026-04-22 2026-08-18

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