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.

15 hosts · 213 ms

HostCertsFirst seenLast seen
finya.de 28 2026-04-20 2026-10-03
*.finya.de 28 2026-04-20 2026-10-03
mx10.finya.de 1 2026-09-23 2026-09-23
mx0.finya.de 5 2026-05-08 2026-09-06
mx1.finya.de 5 2026-05-07 2026-09-04
mx2.finya.de 5 2026-05-11 2026-09-09
mx3.finya.de 5 2026-05-06 2026-09-03
mx4.finya.de 5 2026-05-05 2026-09-03
mx5.finya.de 5 2026-05-05 2026-09-02
mx6.finya.de 5 2026-05-07 2026-09-05
mx7.finya.de 5 2026-05-07 2026-09-04
mx8.finya.de 5 2026-05-09 2026-09-06
mx9.finya.de 5 2026-05-08 2026-09-05
giojhm.finya.de 4 2026-05-06 2026-09-13
atlas.finya.de 1 2026-06-26 2026-06-26

Programmatic access: API GET /v1/hosts/finya.de (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/finya.de.