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KDDI, as it is known today, resulted from a merger between KDD, DDI and IDO Corporation in 2000. Headquartered in Tokyo, the Japanese telecommunication services company offers wireless services in Japan through its au brand, which has over 61 million mobile subscribers as of March 2021. KDDI also operates more than 40 data centres in 12 countries under the Telehouse brand.

Ranking position
#33 /200
Total score
49.5 /100
Measurement area Score (0-2) Rank (0-200)


0.7 /2 #67


0.7 /2 #54


1.4 /2 #17


1.2 /2 #48

Core social indicators

1.0 /2 #29
Indicates the score for the top performing company.

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Core Social Assessment

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  1. 2020
  2. 2021

More about the company

Tokyo, Japan
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Ownership structure
Publicly listed
Fiscal year
Begins 1 April
Group revenue
US$ 49,628 millions (FY2021)
Group employees
48,829 (FY2021)
Emission data
1,646,336 tCO2 (S1+S2 LB)
Electricity consumption
3,638,802 MWh (FY2021)
Company filing name
KDDI Corporation

This company is part of the SDG2000, the 2,000 most influential companies

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