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 · 195 ms

HostCertsFirst seenLast seen
zenfinans.no 5 2026-04-28 2026-08-28
mail.zenfinans.no 3 2026-05-29 2026-08-07
ion.zenfinans.no 1 2026-08-21 2026-08-21
app.zenfinans.no 5 2026-05-02 2026-08-22
tjenester.zenfinans.no 5 2026-05-28 2026-09-28
www.tjenester.zenfinans.no 5 2026-05-28 2026-09-28
bankrouter.zenfinans.no 3 2026-05-22 2026-09-07
insights.zenfinans.no 1 2026-08-18 2026-08-18
soknad-test.zenfinans.no 1 2026-08-25 2026-08-25
portal-test.zenfinans.no 1 2026-08-29 2026-08-29
crm-test.zenfinans.no 1 2026-08-29 2026-08-29
www.zenfinans.no 5 2026-04-28 2026-08-28

Programmatic access: API GET /v1/hosts/zenfinans.no (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/zenfinans.no.