Hello all .. TATA DOCOMO all circles mobile series is listed below:Sl No Circle MSC Code1 Delhi 90322 Andhra Pradesh 90303 Assam 4 Bihar/Jharkhand 90315 Gujarat 90336 Haryana 90347 Himachal Pradesh 90358 Jammu & Kashmir 9 Karnataka 903610 Kerala 903711 Madhya Pradesh & Chattisgarh 903912 Maharashtra & Goa 902813 Mumbai 902914 North East 15 Orissa 904016 Punjab 904117 Rajasthan 904218 Tamil Nadu including Chennai 904319 Uttar Pradesh (E) 904420 Uttar Pradesh (W) & Uttarkhand 904521 Kolkata 903822 West Bengal 9046Mobile series / MSC Codes means the mobile numbers in that particular telecom circle start with these numbers.... Eg : TATA DOCOMO Karnataka Circle mobile numbers will begin with 9036AXXXXX (where A is switch levels: 0 ~ 9 & XXXXX are the subscriber number in that series & level from 00000~99999)