NTT is the holding company for the NTT group including NTT-East, NTT-West and NTT Docomo (Source).
Japan
Valid from
Organization: Any kind of organization. The Organization class represents a kind of Agent corresponding to social instititutions such as companies, societies etc.
About
NTT (Nippon Telegraph and Telephone Corporation) is a Japanese holding company for the NTT group, including regional operators NTT-East and NTT-West and wholly owned subsidiary NTT Docomo since June 2020 (Source), (Source).
Operator Characteristics
Business-only ISP?
No
NTT is not business-only; it is a holding company and does not directly sell telecom services (Source).