Below are the mobile number series starting with 800521. 800521 mobile series has been awarded to BSNL Mobile Operator for UP (East) Circle. So, all the numbers starting with 800521, including 8005210, 8005211, 8005212, 8005213, 8005214, 8005215, 8005216, 8005217, 8005218 and 8005219 belong to BSNL Mobile UP (East). There are a total of around 10 Thousand (Ten Thousand) mobile numbers possible with the series 800521. With each sub-series like 8005210, 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 800521 ( Eight Zero Zero Five Two One ).