JA Japan
- JA-01 NTT DoCoMo - NTT
- JA-02 Nippon Idou Tsushin (IDO) - NTT
- JA-03 Daini Denden - JTAC
- JA-04 Nippon Idou Tsushin (IDO) - JTAC
- JA-05 NTT DoCoMo - PDC800
- JA-06 TU-KA Cellular Tokyo - PDC
- JA-07 TU-KA Cellular Tokai - PDC
- JA-08 TU-KA Cellular Kansai - PDC
- JA-09 Tokyo Digital Phone - PDC1500
- JA-10 Central Japan Digital Phone - PDC
- JA-11 Kansai Digital Phone - PDC
- JA-12 Digital TU-KA Kyushu - PDC
- JA-13 Kyushu Cellular Telephone - PDC
- JA-14 Digital TU-KA Chugoku - PDC1500
- JA-15 Shikoku Cellular Telephone - PDC
- JA-16 Okinawa Cellular Telephone - PDC
- JA-17 Chugoku Cellular Telephone - PDC
- JA-18 Hokuriku Cellular Telephone - PDC
- JA-19 Digital TU-KA Tohoku - PDC
- JA-20 Nippon Idou Tsushin (IDO) - PDC1500
- JA-21 Daini Denden - PDC1500
- JA-22 Digital TU-KA Hokkaido Co. - PDC1500
- JA-23 Digital TU-KA Hokuriku - PDC1500
Telecom
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