Mobile Telephone Numbering System Indian Mobile numbers have 10 digits with AB-XYZ-OOOOO format where AB- the access code, XYZ- MSC Code and OOOOO is the subscriber number. First five digits are allotted time to time by DoT to all mobile operators. Generally a set of 10 MSC codes are allotted to a mobile operator hence first four digits of the mobile number become sufficient to identify the mobile operator and circle. Sometime first 5 and last 5 MSC codes are allotted to different circles. So with the help of this table you can find out Mobile Operator and Circle of Mobile Number. Country Code- 91, List of National Destination Codes (NDC)- First 4 digits of mobile number ABXY 70 71 72 73 74 75 76 77 78 79 7000 - -- 7100 $ $$ 7200 T TN 7300 - -- 7400 - -- 7500 I UW 7600 A GJ 7700 $ $$ 7800 V UE 7900 - -- 7001 - -- 7101 - -- 7201 $ $$ 7301 - -- 7401 - -- 7501 T WB 7601 $ $$ 7701 $ $$ 7801 $ $$ 7901 - -- 7002 - -- 7102 $ $$ 7202 $ $$ 7302 - -- 7402 - -- 7502 C TN 7602 A WB...