Japan·Asia & Middle East

au

OperatorKDDI Corporation

Live2G4G7 bands
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LocationJapanJP
Japan landscape

PLMN ID · 44070

440
mcc
Japan
70
mnc
au

MCC

Mobile Country Code

MNC

Mobile Network Code

PLMN

MCC + MNC

TADIG

Not on file

GSMA roaming code

Technology

2G · 4G on this network

3G

Not on record

5G

Not on record

Record

Updated 2025-04-09

Brand
au
Operator
KDDI Corporation
Country
Japan(JP)
Dialling code
Mobile Country Code
Mobile Network Code
PLMN ID
TADIG code
Technologies
2G · 4G7 bands on file
Status
Live

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About au

KDDI Corporation, operating under the "au" brand, is a major mobile network operator in Japan (MCC 440), part of the broader Asia & Middle East region. Identified by the Mobile Network Code (MNC) 70, au competes primarily with NTT Docomo and SoftBank, forming the trio dominating the Japanese mobile telecommunications market. Au boasts widespread 4G LTE coverage and is aggressively rolling out 5G services across Japan, aiming to provide enhanced connectivity and faster speeds to its subscribers. Known for its innovative marketing campaigns and collaborations with various companies, au offers a wide range of mobile plans, devices, and related services. They are significant players in the IoT (Internet of Things) space within Japan, and also have a number of sub brands that are popular within the country. Like other Japanese carriers, au prioritizes technological advancements and invests heavily in research and development to stay ahead in the competitive landscape. The network’s reliability and focus on customer service have contributed to its strong market position and it has made great strides to connect the more rural areas of the mountainous country.

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