how to know internet balance of tata docomo, Airtel,idea,vodafone and Reliance

Prepaid Accounts Only
For Airtel 2G balance *123*10#
For Airtel 3G balance *123*11#
For Aircel 2G  and 3G balance *126*4#  Full details*126*4#
Idea
Tata Docomo
Reliance
Vodafone
Bsnl
Mts

If any one knows please comment Below