Phone calls from 1600 number series cannot be blocked, DND app can block calls from 140 series: TRAI
The Telecom Regulatory Authority of India (TRAI) has clarified that calls from the 1600 series cannot be blocked by third-party apps, as they are reserved for government and regulated financial communications. Promotional calls from the 140 series remain subject to DND registry preferences.
No app can block phone calls originating from 1600 number series that are meant for communications by regulated entities and the government to citizens, TRAI said on Friday (July 10, 2026), asserting its stance amid an ongoing tussle with caller identification app Truecaller over the labelling and identification of calls from the dedicated number series.
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