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.

16 hosts · 258 ms

HostCertsFirst seenLast seenDNS
ikea.ca 8 2026-05-20 2026-09-28 ok
*.ikea.ca 1 2026-09-28 2026-09-28 —
mta-sts.mc.news.email.ikea.ca 2 2026-03-30 2026-08-30 ok
cloud.news.email.ikea.ca 2 2025-06-13 2026-05-31 ok
data.e.news.email.ikea.ca 2 2026-07-10 2026-07-10 ok
cdn.e.news.email.ikea.ca 19 2026-07-09 2026-07-16 ok
image.news.email.ikea.ca 2 2026-02-02 2026-04-20 ok
click.news.email.ikea.ca 1 2026-05-23 2026-05-23 ok
view.news.email.ikea.ca 2 2025-06-13 2026-05-31 ok
go.ikea.ca 10 2026-06-04 2026-08-02 ok
form-handler.ikea.ca 10 2026-04-12 2026-08-08 ok
fr.ikea.ca 10 2026-04-13 2026-08-09 ok
www.fr.ikea.ca 6 2026-04-12 2026-08-08 ok
mta-sts.ikea.ca 2 2026-03-06 2026-07-22 ok
inventory-management.ikea.ca 3 2026-04-27 2026-08-16 ok
www.ikea.ca 10 2026-04-13 2026-08-09 ok

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