Information about DND Service

DND
Do not disturb service
The National Customer Preference Register (NCPR).

To avoid unwanted telemarketing calls and messages, register your number with the National Customer Preference Register. Your mobile number will be registered within 7 days from the date of request. To register your mobile number, simply dial our toll free number 1909 and follow the IVR instructions.
You can also send an SMS START to 1909 from the available preferences-

The options are -
Option ‘0’- to STOP ALL promotional calls and messages
Option ‘1’- to STOP ALL promotional calls and to receive promotional message only from Banking/Insurance/Financial Products/Credit Cards
Option ‘2’- to STOP ALL promotional calls and to receive promotional message on Real Estate
Option ‘3’- to STOP ALL promotional calls and to receive promotional message on Education
Option ‘4’- to STOP ALL promotional calls and to receive promotional message on Health
Option ‘5’- to STOP ALL promotional calls and to receive promotional message on Consumer Goods and automobiles
Option ‘6’- to STOP ALL promotional calls and to receive promotional message from Communication/Broadcasting/Entertainment
Option ‘7’- to STOP ALL promotional calls and to receive promotional message on Tourism and Leisure


You may withdraw or change preference after 90 days from the date of registration. Simply send an SMS in the below mentioned format-
SMS STOP to 1909 to deregister for single option.
SMS STOP to 1909 to deregister for more than one options.
SMS STOP to 1909 to deregister for all promotional calls and messages.

Note: At any point of time, to check the status of your registration, SMS STATUS CPR to 1909


Source : http://www.uninor.in/Pages/DND.aspx