India’s Telecom Regulatory Authority (TRAI) has clarified why call management apps such as Truecaller cannot label calls from the 1600 and 140 phone number series as spam. This comes after Truecaller’s CEO raised concerns that proposed restrictions would stop the app from warning users about scam and spam calls originating from these designated number ranges.
TRAI emphasized that the 1600 series is reserved for important service and transaction-related calls from banks, financial institutions, and government bodies, while the 140 series is exclusively for promotional calls. The regulator insists that calls from these series cannot be tagged, filtered, or blocked by apps to maintain trust in these communications.
Why the 1600 and 140 Number Series Are Special
The 1600 number series is assigned to calls from regulated financial institutions such as banks, insurance companies, and pension funds, as well as government agencies communicating with citizens. The purpose of this dedicated series is to ensure that these calls are recognized as trustworthy and legitimate by consumers.
Similarly, the 140 series is designated solely for promotional calls made by various sectors. Entities using this series must register with telecom service providers and comply with regulations designed to protect consumers’ preferences.
TRAI’s Telecom Commercial Communications Customer Preference Regulations (TCCCPR) govern these number series. Under these rules, calls from the 1600 and 140 series cannot be blocked or tagged by call management apps, except when consumers have opted out of promotional calls through the national Do Not Disturb (DND) registry.
Key Facts About TRAI’s Rules and Truecaller’s Concerns
- 1600 series calls are reserved for service and transaction-related communications from banks and government agencies.
- 140 series calls are exclusively for promotional messages from registered entities.
- Consumers can register on the DND list to block promotional calls from specific sectors.
- Call management apps cannot tag or block calls from these series unless blocked due to DND preferences.
- Truecaller CEO Rishit Jhunjhunwala highlighted a surge in spam calls originating from these series, with over 51 million such calls going unanswered daily.
- Truecaller users have ignored 81% of 140-series calls and 79% of 1600-series calls in recent months due to trust issues.
- Truecaller has introduced a 'Frequently Blocked' badge to indicate numbers blocked by many users without labeling them as spam.
Why TRAI’s Decision Matters for Call Trust and Consumer Protection
TRAI’s stance aims to protect the integrity of calls from critical service providers and government agencies by preventing call management apps from mislabeling them as spam. The regulator fears that tagging these calls could mislead consumers who have chosen to receive such communications.
However, Truecaller’s CEO argues that the rise in spam calls using these number series undermines consumer trust and harms both users and legitimate businesses. He warns that restricting apps from warning users about spam calls could create an environment where scammers exploit these trusted number ranges.
This debate highlights the challenge of balancing consumer protection with the need to maintain trust in essential communications. TRAI’s request for government authorization to regulate call management apps signals ongoing efforts to address spam and fraudulent calls while safeguarding legitimate callers.
Frequently Asked Questions
Q: Why can’t Truecaller label calls from 1600 and 140 series as spam?
A: TRAI regulations prohibit tagging, blocking, or filtering calls from these designated series to preserve trust in important service and promotional communications.
Q: What types of calls use the 1600 and 140 number series?
A: The 1600 series is for service and transaction calls from banks, financial institutions, and government agencies. The 140 series is reserved for promotional calls from registered entities.
Q: How can consumers avoid unwanted promotional calls from the 140 series?
A: Consumers can register their preferences on the national Do Not Disturb (DND) registry to block promotional calls from specific sectors using the 140 series.





