Why Am I Getting Calls From a 140 or 160 Number? What It Means

A call from a number starting with 140 is a registered promotional or telemarketing call from a business that has followed TRAI's rules — not a scam, though you can still opt out of receiving it. A call starting with 160 (or the longer 1600 series) is a verified transactional or service call, usually from a bank, insurer, or government body, and by regulation it cannot be blocked or tagged as spam by your phone.

The short answer

TRAI requires Indian businesses to use specific number prefixes depending on what kind of call they're making, so that both telecom operators and customers can tell the purpose of a call before answering it. This is part of the same DLT (Distributed Ledger Technology) framework that governs bulk commercial SMS — if you want the fuller picture of how businesses register for this, see our DLT registration guide.

140 series: promotional and telemarketing calls

TRAI has mandated the 140xx series for promotional voice calls made by businesses across any sector — retail offers, real estate follow-ups, loan and credit card pitches, ed-tech admissions calls, and similar marketing or telemarketing calls. Businesses register these numbers through the DLT process as Principal Entities before using them to call customers.

• 140-series calls are legitimate, registered promotional calls — not automatically spam
• They can be blocked for a specific customer if that customer has opted into DND (Do Not Disturb) for the relevant sector
• Many phone apps and carrier services label 140-series calls as "promotional" or "telemarketer" automatically, since the prefix itself signals the call type

160 / 1600 series: verified transactional and service calls

The 1600xx series is reserved for service and transactional calls from regulated financial entities — banks, NBFCs, and insurers under RBI, SEBI, or IRDAI oversight — and from government bodies communicating with citizens. Only verified applicants can register a 160-series number, through DLT registration combined with regulator-specific validation (for example, RBI licence verification for a bank or NBFC).

• 160-series numbers are for calls to existing customers about their own account, transaction, or service — not for new-customer marketing
• Under TRAI's regulation, operators are not permitted to tag, block, or filter calls from a correctly registered 160-series number
• If you get an OTP, fraud alert, EMI reminder, or account-servicing call from a 160-series number, it's a stronger signal of legitimacy than an unlabelled 10-digit mobile number

How to tell if a 140 or 160 call is legitimate

• Check the full number against the series — a genuine 140 or 160 call will show the full prefix, not a random 10-digit mobile number
• Legitimate 160-series callers will never ask for your full card number, CVV, OTP, or net-banking password over the call — that's a fraud red flag regardless of the number shown
• If in doubt, hang up and call the business or bank back on a number from their official website or the number printed on your card or statement

How to stop 140-series calls

If you'd rather not receive promotional calls at all, register your number on India's National DND (Do Not Disturb) registry, either by SMS ('START DND' to 1909) or through the TRAI DND app. You can choose to block specific categories (banking/financial, real estate, education, and so on) or all commercial categories. Registration typically takes effect within a few days, and DND-registered numbers should not receive 140-series calls from businesses that are following DLT rules correctly.

For businesses: getting a registered number

If you're running outbound calling campaigns — sales follow-up, appointment reminders, loan or admissions calling — you register as a Principal Entity on a DLT platform, submit your call scripts as templates, and your telephony or AI calling provider maps approved templates to a registered number series. This applies whether the calls are placed by a human team or an AI voice agent; the registration requirement sits with the calling business, not the tool making the call.