The Telecom Regulatory Authority of India (TRAI) intensified its crackdown on unsolicited commercial communications (UCC) during the first quarter of the 2026-27 financial year, taking action against more than 1.83 lakh telecom resources and blacklisting 263 entities as part of its ongoing efforts to reduce spam calls and promotional messages across the country.
According to the regulator's quarterly highlights released on Tuesday, TRAI continues to strengthen its enforcement framework by targeting telecom resources involved in repeated violations of anti-spam regulations while also encouraging consumers to make greater use of the Do Not Disturb (DND) system.
Between April and June 2026, telecom operators received 1.085 million complaints related to unsolicited commercial communications. Of these, 0.553 million complaints were found to be actionable after verification and investigation, leading to regulatory action against violators.
As part of the enforcement drive, 1,37,053 telecom resources were barred from accessing telecom services for 15 days following their first violation. Resources involved in repeated violations faced stricter penalties, including disconnection from telecom networks for a period of one year. In addition, TRAI blocked 2,873 SMS headers used for promotional messaging and blacklisted 263 senders, preventing them from using telecom networks for commercial communications for one year.
The regulator noted that the action was taken despite the enormous scale of India's telecom traffic. During the April-June quarter, telecom networks handled approximately 730.82 billion voice calls and 691.09 billion SMS messages. Against this massive volume of communications, the 1.085 million UCC complaints translated to roughly 1.5 complaints for every one million calls, indicating that while the percentage of complaints remains relatively small, the absolute number of spam-related grievances continues to be significant.
TRAI said consumer participation remains central to its anti-spam framework. The TRAI DND App continued to be the preferred platform for reporting spam, accounting for nearly 89 per cent of all unsolicited commercial communication complaints received by telecom service providers during the quarter.
Consumers can also register complaints or update their communication preferences through their telecom operator's mobile application, official website, or by calling or sending an SMS to 1909, the dedicated Do Not Disturb service. The regulator urged more subscribers to actively use these facilities to gain greater control over promotional communications.
Despite the availability of these services, TRAI observed that more than 1.12 billion mobile subscribers have yet to register any DND preference. As a result, these users remain eligible to receive promotional communications from registered telemarketers and commercial entities. The regulator advised consumers who wish to limit marketing calls and messages to enrol in the DND registry and specify their communication preferences.
To help consumers distinguish between different categories of calls, TRAI has designated separate numbering series for promotional and service communications. Promotional calls are made through the 140xx numbering series, while 1600xx numbers are reserved for service and transactional calls, including communications from banks, financial institutions, insurance companies and government departments. Calls originating from the 140 series are verified against individual customer preferences before being delivered, helping ensure compliance with DND regulations.
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Technology has also become an increasingly important component of TRAI's anti-spam strategy. During the quarter, artificial intelligence (AI)-based systems deployed by telecom service providers identified 22.99 billion incoming voice calls and 1.44 billion incoming SMS messages as suspected spam based on calling behaviour and traffic patterns.
The AI-powered systems analyse communication patterns to detect suspicious activity and generate alerts for potential violators. Since telecom operators began issuing automated warning notifications on June 23, more than 2.43 lakh warnings have been sent to entities suspected of sending spam or engaging in suspicious communication practices.
TRAI said its continued enforcement measures, combined with AI-driven monitoring, stricter penalties and greater consumer participation, are aimed at making India's telecom ecosystem safer and more transparent. The regulator added that these initiatives are designed not only to curb unsolicited commercial communications but also to help consumers better identify, avoid and report potentially fraudulent or misleading calls and messages.
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