Below are the mobile number series starting with 91231. 91231 mobile series has been awarded to Reliance JIO Operator for Bihar & Jharkhand Circle. So, all the numbers starting with 91231, including 912310, 912311, 912312, 912313, 912314, 912315, 912316, 912317, 912318 and 912319 belong to Reliance JIO Bihar & Jharkhand. There are a total of around 1 lac (One Hundred Thousand) mobile numbers possible with the series 91231. With each sub-series like 912310, 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 91231 ( Nine One Two Three One ).