日本テレコムトップ企業
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Nippon Telegraph and Telephone Corporation
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KDDI Corporation
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SoftBank Group Corp.
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Rakuten Mobile, Inc
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Internet Initiative Japan, Inc.
*免責事項:上位企業は順不同
日本テレコム市場集中度
日本テレコム会社一覧
Nippon Telegraph and Telephone Corporation
KDDI Corporation
SoftBank Group Corp.
Rakuten Mobile, Inc.
Internet Initiative Japan, Inc.
JSAT Corporation
TOKAI Communications Corporation
Wowow Inc.
Internet Initiative Japan, Inc.
Z Holdings Corporation