The number of mobile IP subscriber in Japan is 92.45million, the end of Jan 2010

From the news of Telecommunications Carriers Associasion, 2010/2/5.They announces the number of subscriber by carriers.
http://www.tca.or.jp/database/2010/01/

Total subscriber of mobile phone in Japan is 111,026,600. The share of NTT docomo is biggest, about 50%.

IP service name of mobile phone by carrier is as follows;
i-mode: NTT docomo
EZweb: au(KDDI)
Yahoo! mobile: Softbank

The Share of mobile phone by system is as follows;
CDMA2000 1x:28.1%
W-CDMA:68.2%
cdmaOne:0.2%
PDC:3.5%

Related post:

The number of mobile IP subscriber in Japan is 92.3million, the end of Dec 2009