DoCoMo: http://www.nttdocomo.co.jp/service/imode/make/content/ip/index.html
'210.153.84.0/24',
'210.136.161.0/24',
'210.153.86.0/24',
'124.146.174.0/24',
'124.146.175.0/24',
'202.229.176.0/24',
'202.229.177.0/24',
'202.229.178.0/24',
'202.229.179.0/24',
'111.89.188.0/24',
'111.89.189.0/24',
'111.89.190.0/24',
'111.89.191.0/24',
'210.153.87.0/24',
'203.138.180.0/24',
'203.138.181.0/24',
'203.138.203.0/24',
SoftBank: http://developers.softbankmobile.co.jp/dp/tech_svc/web/ip.php
AU: http://www.au.kddi.com/ezfactory/tec/spec/ezsava_ip.html
'210.230.128.224/28',
'121.111.227.160/27',
'61.117.1.0/28',
'219.108.158.0/27',
'219.125.146.0/28',
'61.117.2.32/29',
'61.117.2.40/29',
'219.108.158.40/29',
'219.125.148.0/25',
'222.5.63.0/25',
'222.5.63.128/25',
'222.5.62.128/25',
'59.135.38.128/25',
'219.108.157.0/25',
'219.125.145.0/25',
'121.111.231.0/25',
'121.111.227.0/25',
'118.152.214.192/26',
'118.159.131.0/25',
'118.159.133.0/25',
'118.159.132.160/27',
'111.86.142.0/26',
'111.86.141.64/26',
'111.86.141.128/26',
'111.86.141.192/26',
'118.159.133.192/26',
'111.86.143.192/27',
'111.86.143.224/27',
'111.86.147.0/27',
'111.86.142.128/26',
'111.86.142.192/26',
'111.86.143.0/26',
WILLCOM: http://www.willcom-inc.com/ja/service/contents_service/club_air_edge/for_phone/ip/