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.

18 hosts · 1028 ms

HostCertsFirst seenLast seenDNS
lotto-brandenburg.de 5 2026-05-11 2026-05-20 ok
*.lotto-brandenburg.de 1 2026-05-20 2026-05-20 —
mail2.lotto-brandenburg.de 1 2026-06-19 2026-06-19 ok
mail3.lotto-brandenburg.de 1 2026-06-19 2026-06-19 ok
owa.lotto-brandenburg.de 1 2026-06-19 2026-06-19 nxdomain
nextcloud.lotto-brandenburg.de 4 2026-06-07 2026-10-06 ok
image.lotto-brandenburg.de 2 2026-05-20 2026-05-20 ok
exchange.lotto-brandenburg.de 1 2026-06-19 2026-06-19 ok
schulung.lotto-brandenburg.de 1 2026-09-07 2026-09-07 ok
mail.lotto-brandenburg.de 1 2026-06-19 2026-06-19 ok
evo.lotto-brandenburg.de 10 2026-06-06 2026-10-02 ok
mail.shop.lotto-brandenburg.de 1 2026-06-19 2026-06-19 ok
newsletter.lotto-brandenburg.de 5 2026-05-29 2026-09-26 ok
autodiscover.lotto-brandenburg.de 1 2026-06-19 2026-06-19 ok
r.dls.lotto-brandenburg.de 4 2026-04-16 2026-09-23 ok
sat.lotto-brandenburg.de 11 2026-06-07 2026-10-04 ok
partner-test.lotto-brandenburg.de 8 2026-05-03 2026-08-29 ok
www.lotto-brandenburg.de 7 2026-05-31 2026-09-26 ok

Programmatic access, with DNS A records: API GET /v1/hosts/lotto-brandenburg.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/lotto-brandenburg.de.