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.

10 hosts · 269 ms

HostCertsFirst seenLast seenDNS
ikea.at 10 2026-05-19 2026-09-28 ok
*.ikea.at 1 2026-09-28 2026-09-28 —
cloud.news.email.ikea.at 1 2025-11-05 2025-11-05 ok
data.e.news.email.ikea.at 2 2026-07-10 2026-07-10 ok
cdn.e.news.email.ikea.at 17 2026-07-09 2026-07-16 ok
image.news.email.ikea.at 2 2026-01-08 2026-02-02 ok
click.news.email.ikea.at 1 2025-11-06 2025-11-06 ok
view.news.email.ikea.at 1 2025-11-05 2025-11-05 ok
go.ikea.at 4 2026-06-05 2026-08-03 ok
www.ikea.at 10 2026-04-13 2026-08-09 ok

Programmatic access, with DNS A records: API GET /v1/hosts/ikea.at (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.at.