TRAI says caller ID apps cannot tag 140, 1600 series calls as spam

In a snub to caller ID feature provider Truecaller, the Telecom Regulatory Authority of India (TRAI) on Friday clarified that caller ID applications or telecom operators cannot tag calls originating from the 140 and 1600 number series as spam.

In a press note, TRAI said that under the Telecom Commercial Communications Customer Preference Regulation (TCCCPR), any tagging, blocking or filtering of calls originating from the 1600 series numbers is not permitted.