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.

9 hosts · 235 ms

HostCertsFirst seenLast seen
newbalance.co.za 5 2025-09-12 2026-09-14
stg.newbalance.co.za 12 2026-06-09 2026-10-05
link.email.newbalance.co.za 13 2026-05-22 2026-10-07
m.newbalance.co.za 8 2026-05-06 2026-09-01
stores.newbalance.co.za 10 2026-04-25 2026-08-22
test.newbalance.co.za 8 2026-05-15 2026-09-10
staging-test.newbalance.co.za 16 2026-04-24 2026-08-20
dev.newbalance.co.za 28 2025-07-24 2026-10-08
www.newbalance.co.za 20 2025-09-12 2026-08-25

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