Cerego Japan provides iKnow! for enterprises and education institutions.

NTT Investment Partners, a corporate venturing unit of Japan-based phone operator Nippon Telegraph & Telephone (NTT), has invested Y100m ($1.3m) in English learning service operator Cerego Japan.

Cerego Japan provides iKnow! for enterprises and education institutions.

In September 2009, Cerego raised $3.4m from NTT and since 2000 has raised $23.4m.