Telecom Regulatory Authority Of India - Subsection
Section 10(2) in The Telecom Unsolicited Commercial Communications Regulations, 2007
(2)Every Access Provider shall update the Private Do Not Call List and the National Do Not Call Register incorporating therein,-(a)the changes, if any, in the National Numbering Plan and other changes on the request of its subscribers;(b)omission of telephone number upon permanent disconnection of such number registered in Private Do Not Call List and National Do Not Call Register.
