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 · 288 ms

HostCertsFirst seenLast seen
generatekiwisaver.co.nz 3 2025-08-31 2026-08-01
*.generatekiwisaver.co.nz 1 2026-01-14 2026-01-14
cloud.advice.generatekiwisaver.co.nz 2 2025-07-12 2026-06-29
image.advice.generatekiwisaver.co.nz 4 2025-07-05 2026-09-07
click.advice.generatekiwisaver.co.nz 2 2025-07-12 2026-06-29
view.advice.generatekiwisaver.co.nz 2 2025-07-12 2026-06-29
crossware.generatekiwisaver.co.nz 2 2026-03-16 2026-09-11
mta-sts.generatekiwisaver.co.nz 5 2026-05-25 2026-09-22
www.generatekiwisaver.co.nz 2 2025-08-31 2026-08-01

Programmatic access: API GET /v1/hosts/generatekiwisaver.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/generatekiwisaver.co.nz.