Below are the mobile number series starting with 991931. 991931 mobile series has been awarded to Vi (Vodafone Idea) Operator for UP (East) Circle. So, all the numbers starting with 991931, including 9919310, 9919311, 9919312, 9919313, 9919314, 9919315, 9919316, 9919317, 9919318 and 9919319 belong to Vi (Vodafone Idea) UP (East). There are a total of around 10 Thousand (Ten Thousand) mobile numbers possible with the series 991931. With each sub-series like 9919310, around 1 thousand (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 991931 ( Nine Nine One Nine Three One ).