Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

8 hosts · 269 ms

HostCertsFirst seenLast seenDNS
ikea.co.nz 9 2026-05-19 2026-09-14 ok
cloud.news.email.ikea.co.nz 3 2025-08-28 2026-07-15 ok
data.e.news.email.ikea.co.nz 2 2026-07-15 2026-07-15 ok
cdn.e.news.email.ikea.co.nz 4 2026-07-14 2026-07-16 ok
image.news.email.ikea.co.nz 2 2026-02-02 2026-05-28 ok
click.news.email.ikea.co.nz 2 2025-08-28 2026-07-14 ok
view.news.email.ikea.co.nz 2 2025-08-28 2026-07-14 ok
www.ikea.co.nz 15 2026-04-12 2026-10-07 ok

Programmatic access, with DNS A records: API GET /v1/hosts/ikea.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/ikea.co.nz.