PLMN ID · 44053
Technology
2G · 4G on this network
Record
Updated 2025-04-09
- Brand
- au
- Operator
- KDDI Corporation
- Country
Japan(JP)
- Region
- Asia & Middle East
- Dialling code
- —
- Mobile Country Code
- All 29 networks on MCC 440
- Mobile Network Code
- PLMN ID
- What is a PLMN ID?
- TADIG code
- —
- Technologies
- 2G · 4G7 bands on file
- VoLTE (4G calling)
- UnknownTell us
- Wi-Fi calling
- UnknownTell us
- Video calling
- UnknownTell us
- VoNR (5G calling)
- UnknownTell us
- Status
- Live
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MVNOs
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Cell towers
Last measured 2026-09-17
28,777
Cells
1,561
Location areas
554,345
Measurements
2020
First measured
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Crowd-sourced cell measurements from OpenCelliD, licensed CC BY-SA 4.0 · as of 2026-09-27. Counts are cells people have measured, not an operator's own figures.
About au
KDDI Corporation au, operating under the brand name "au," is a major mobile network operator in Japan. Identified by its Mobile Country Code (MCC) of 440 and Mobile Network Code (MNC) of 53, au provides a comprehensive suite of telecommunications services to a large portion of the Japanese population. As one of the "big three" mobile carriers in Japan, alongside NTT Docomo and SoftBank, au competes fiercely in a market known for its technological innovation and high customer expectations. KDDI offers 4G LTE and has been actively deploying 5G services, striving to deliver ultra-fast connectivity and enhanced mobile experiences across the nation. Beyond mobile services, KDDI's "au" brand is heavily ingrained within the daily lives of locals, it is a national institution in Japan. It offers a range of integrated services, including fixed-line internet, cable television, and e-commerce platforms. KDDI is known for its innovative marketing campaigns and partnerships, often collaborating with popular anime and entertainment franchises. The company plays a crucial role in Japan's technology landscape, contributing significantly to the country's advancements in mobile communication and digital infrastructure within the broader Asia and Middle East region.
APN settings
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Change history
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