Below are the mobile number series starting with 991231. 991231 mobile series has been awarded to Vi (Vodafone Idea) Operator for Andhra Pradesh & Telangana Circle. So, all the numbers starting with 991231, including 9912310, 9912311, 9912312, 9912313, 9912314, 9912315, 9912316, 9912317, 9912318 and 9912319 belong to Vi (Vodafone Idea) Andhra Pradesh & Telangana. There are a total of around 10 Thousand (Ten Thousand) mobile numbers possible with the series 991231. With each sub-series like 9912310, 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 991231 ( Nine Nine One Two Three One ).