Below are the mobile number series starting with 81004. 81004 mobile series has been awarded to Reliance Mobile GSM Operator for Kolkata Circle. So, all the numbers starting with 81004, including 810040, 810041, 810042, 810043, 810044, 810045, 810046, 810047, 810048 and 810049 belong to Reliance Mobile GSM Kolkata. There are a total of around 1 lac (One Hundred Thousand) mobile numbers possible with the series 81004. With each sub-series like 810040, around 10 thousand (9,999 to be precise) mobile numbers are possible.

You can click on any of the number series below to view the sub-series / list of numbers under them, starting with 81004 ( Eight One Zero Zero Four ).