TRAI has issued a fresh clarification regarding the 140 and 1600 number series, dismissing recent media reports as potential misinformation and reiterating its existing position on how these numbers should be treated by caller ID applications. According to the regulator, 1600-series numbers cannot be tagged, blocked, or filtered by caller ID and call management apps, while 140-series telemarketing calls can only be blocked by consumers through the Do Not Disturb (DND) registry. TRAI’s 140/1600 number whitelist leads to 5 lakh daily blocks, says Truecaller.

The clarification comes amid growing debate over the use of these dedicated number series. Under TRAI’s framework, 1600-series numbers are reserved exclusively for service and transactional communications, including fraud alerts, payment confirmations, OTPs, and account-related notifications. However, concerns have been raised that several banks and financial institutions are using these numbers to make promotional calls for credit cards, loans, insurance, and other financial products instead of limiting them to transactional services.

Despite reiterating the rules governing caller ID platforms, TRAI’s latest clarification does not address enforcement against organizations allegedly misusing the 1600-series numbers. Since banks, NBFCs, insurers, and other regulated institutions fall directly under TRAI’s telecom regulations for commercial communications, the absence of any enforcement-related announcement has continued to draw attention.

The clarification also comes as the Ministry of Electronics and Information Technology (MeitY) is reportedly evaluating TRAI’s request to be designated as an authorized agency for regulating caller ID and call management applications. According to reports, TRAI has approached the ministry seeking regulatory oversight over platforms such as Truecaller, while MeitY is consulting the Department of Telecommunications (DoT) regarding the legal framework. At present, caller ID applications operate under the Information Technology Act, 2000, placing them under MeitY’s jurisdiction rather than TRAI’s.

Meanwhile, caller ID platforms remain unable to display spam warnings or community-generated spam tags for 140 and 1600 series numbers, regardless of how many users report them. TRAI’s clarification further confirms that consumers currently have no approved mechanism to block or filter unwanted 1600-series calls, while the DND-based complaint mechanism remains applicable only to 140-series telemarketing numbers.

According to Truecaller, the impact is already visible in user behaviour. The company recently stated that users now ignore around 80% of calls originating from the 140 and 1600 series and manually block more than five lakh such calls every day. With caller ID apps unable to provide spam context, many users appear to be avoiding calls from these number ranges altogether, potentially missing genuine banking alerts, fraud warnings, and other important service-related communications.

While TRAI’s latest clarification reinforces the regulatory framework governing designated number series, questions surrounding the misuse of 1600-series numbers by regulated institutions remain unresolved. Until enforcement addresses such violations, consumer trust in these dedicated number ranges may continue to decline, affecting both unwanted promotional calls and legitimate service communications.