Stop All Calls
To enroll in the National Do Not Call registry in India, do one of the following.
Send an SMS with the message Start 0 to 1909 OR Call 1909 and follow instructions
Note: If the above SMS is not recognized, try sending the old format message START DND to 1909 You may call 1909 to enquire current status and know your NDNC registration date.
Stop Calls by Category
Send an SMS with the message STOP 3 to 1909
Below is a list of category numbers.