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.

11 hosts · 328 ms

HostCertsFirst seenLast seen
newbalance.co.nz 22 2025-10-13 2026-09-16
staging.newbalance.co.nz 9 2026-05-26 2026-09-21
arportal.newbalance.co.nz 4 2026-02-21 2026-10-05
img.email.newbalance.co.nz 10 2026-05-07 2026-09-02
link.email.newbalance.co.nz 19 2026-05-22 2026-09-26
stores.newbalance.co.nz 7 2026-04-25 2026-08-21
arportalcollections.newbalance.co.nz 4 2026-02-22 2026-10-06
development.newbalance.co.nz 25 2025-07-24 2026-09-07
test.newbalance.co.nz 8 2026-04-25 2026-08-21
staging-test.newbalance.co.nz 16 2026-04-24 2026-08-20
www.newbalance.co.nz 25 2025-10-13 2026-09-16

Programmatic access: API GET /v1/hosts/newbalance.co.nz (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/newbalance.co.nz.