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.

12 hosts · 228 ms

Download CSV
HostCertsFirst seenLast seen
elon.se 6 2026-05-06 2026-09-01
beta.elon.se 8 2026-05-06 2026-09-01
foretag.elon.se 10 2026-05-14 2026-09-09
kampanj.elon.se 53 2026-04-28 2026-08-14
to.elon.se 5 2026-06-02 2026-09-30
edr.elon.se 1 2026-09-17 2026-09-17
trycksaker.elon.se 49 2026-04-28 2026-08-14
sos.elon.se 1 2026-06-17 2026-06-17
www.sos.elon.se 1 2026-06-17 2026-06-17
bf-content.elon.se 13 2026-06-10 2026-10-06
www.elon.se 12 2026-05-07 2026-09-03
academy.elon.se 4 2026-06-12 2026-10-10

Programmatic access: API GET /v1/hosts/elon.se (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/elon.se.