Below are the mobile number series starting with 991831. 991831 mobile series has been awarded to Vi (Vodafone Idea) Operator for UP (East) Circle. So, all the numbers starting with 991831, including 9918310, 9918311, 9918312, 9918313, 9918314, 9918315, 9918316, 9918317, 9918318 and 9918319 belong to Vi (Vodafone Idea) UP (East). There are a total of around 10 Thousand (Ten Thousand) mobile numbers possible with the series 991831. With each sub-series like 9918310, 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 991831 ( Nine Nine One Eight Three One ).