The Telecom Regulatory Authority of India (TRAI) has notified the Telecom Commercial Communication Customer Preference (Third Amendment) Regulations, 2026, introducing tighter regulatory guardrails against Unsolicited Commercial Communications (UCC) and bringing third-party caller-ID platforms and Call Management Applications (CMAs) under direct compliance oversight.

Under the amended framework, call-management applications such as Truecaller that offer in-app spam and junk reporting must transmit user complaint logs directly to the Distributed Ledger Technology (DLT) platform operated by telecom access providers. The regulator intends for this data pipeline to bridge platform-siloed spam reports with network-level enforcement infrastructure. Truecaller has formally raised reservations against the clause, characterizing it as a “one-way exchange” that compels third-party apps to turn over proprietary, crowdsourced data to telecom operators.

Simultaneously, the regulations prohibit CMAs from blanket blocking, filtering, or spam-tagging designated government and commercial number bands—specifically the 1600xx and 1601xx series (reserved for verified transactional, banking and utility alerts) and the 140xx series (governed promotional calls)—while preserving individual users’ rights to block numbers manually on their devices.

Enforcement mechanisms have also been bolstered through AI/ML integration. Telecom service providers are mandated to deploy automated systems to identify suspect Calling

Line Identifiers (CLIs) and share intelligence across networks. The threshold for initiating enforcement action has been reduced: a sender can now be penalized if flagged by three unique user complaints within a 10-day window when corroborated by AI-based suspect CLI detections, down from the earlier five-complaint benchmark. Any misused headers or message templates must be suspended within six hours of notification, with repeat offenders facing telecom resource blacklisting and disconnection for up to one year.

Additionally, the amendment formalizes definitions and rules for Application-to-Person (A2P) voice traffic, covering automated dialers, robocalls and AI-generated synthetic voices. Businesses deploying automated calling must pre-declare their operations and phone numbers with their respective telecom operators; unnotified automated calls will be categorized as spam, permitting access providers to levy termination surcharges of up to ₹0.05 per minute.

To provide consumer recourse, TRAI has instituted a structured 15-day appellate window, allowing subscribers dissatisfied with spam complaint resolutions to approach the Appellate Authority via the TRAI DND application, operator portals, or through 1909 voice and SMS channels.