RMDialer explains the 1600 series number: calls about your account from verified banks, insurers and government, told apart from 140 promotion and 1601 service calls.
General information from TRAI and PIB releases, not legal advice
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Updated
Short answer
A 1600 series number is a phone number that begins with 1600 and belongs to a verified bank, NBFC, insurer, mutual fund, broker, pension body or government organisation, used only for service and transactional calls. RMDialer explains it here because telling number series apart now matters to anyone answering business calls in India. The Department of Telecommunications assigned the series, and TRAI directed financial entities regulated by RBI, SEBI, PFRDA and IRDAI to move their service calls to it, with deadlines between 1 January and 15 March 2026. Promotional calls use a different series, 140. Since 10 August 2026 a further series, 1601, covers service calls from utilities, couriers and logistics firms. On 18 September 2026 TRAI said numbers from 140, 1600 and 1601 should not be flagged as spam. A 1600 call is far more likely to be genuine than a 10-digit number claiming to be your bank, but no genuine caller asks for an OTP.
Key takeaways
The first digits now tell you what kind of organisation is calling and what the call is allowed to be about.
| Series | Who calls from it | What the call is for | Promotion and DND |
|---|---|---|---|
| 140xx | Registered telemarketers | Promotional calls: offers, loans, cards, property projects | Yes, by category, through DND |
| 1600xx | Banks, NBFCs, insurers, mutual funds, brokers, pension bodies and government organisations | Service and transactional calls: your account, a payment, a policy, a KYC update | Not meant for promotion; a 1600 number may not be used to sell |
| 1601xx | Phase I from 10 Aug 2026: electricity, water, city gas and LPG distributors, couriers and logistics firms | Service and transactional calls: a bill, a gas booking, a delivery | Not meant for promotion; promotional use is barred |
| Ordinary 10-digit mobile or landline | People, and businesses outside those sectors | Anything; the number alone says nothing about who is calling | Promotion from it should not happen at all |
140xx
Who: Registered telemarketers
For: Promotional calls: offers, loans, cards, property projects
Promotion: Yes, by category, through DND
1600xx
Who: Banks, NBFCs, insurers, mutual funds, brokers, pension bodies and government organisations
For: Service and transactional calls: your account, a payment, a policy, a KYC update
Promotion: Not meant for promotion; a 1600 number may not be used to sell
1601xx
Who: Phase I from 10 Aug 2026: electricity, water, city gas and LPG distributors, couriers and logistics firms
For: Service and transactional calls: a bill, a gas booking, a delivery
Promotion: Not meant for promotion; promotional use is barred
Ordinary 10-digit mobile or landline
Who: People, and businesses outside those sectors
For: Anything; the number alone says nothing about who is calling
Promotion: Promotion from it should not happen at all
Where promotional calling begins and which rules come with the 140 series is set out on telemarketing software, and the short meaning of the promotional series is on 140 number series.
Last dates from TRAI’s Directions of 19 November and 16 December 2025, as published by PIB. All of them have now passed.
| Who | Regulator | Last date |
|---|---|---|
| Commercial banks (public, private and foreign) | RBI | 1 Jan 2026 |
| Large NBFCs (over ₹5,000 crore assets), payments banks, small finance banks | RBI | 1 Feb 2026 |
| Other NBFCs, co-operative banks, regional rural banks and smaller entities | RBI | 1 Mar 2026 |
| Mutual funds and asset management companies | SEBI | 15 Feb 2026 |
| Qualified stockbrokers | SEBI | 15 Mar 2026 |
| Central recordkeeping agencies and pension fund managers | PFRDA | 15 Feb 2026 |
| Insurance companies and other IRDAI-regulated entities | IRDAI | 15 Feb 2026 |
Commercial banks (public, private and foreign)
RBI · by 1 Jan 2026
Large NBFCs (over ₹5,000 crore assets), payments banks, small finance banks
RBI · by 1 Feb 2026
Other NBFCs, co-operative banks, regional rural banks and smaller entities
RBI · by 1 Mar 2026
Mutual funds and asset management companies
SEBI · by 15 Feb 2026
Qualified stockbrokers
SEBI · by 15 Mar 2026
Central recordkeeping agencies and pension fund managers
PFRDA · by 15 Feb 2026
Insurance companies and other IRDAI-regulated entities
IRDAI · by 15 Feb 2026
Other SEBI-registered intermediaries may move voluntarily after verification. Source: PIB releases 2191647 and 2205350.
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Mostly yes, with the same care you give any call about your money.
A 1600 or 1601 call should be about something you already have: an account, a policy, a bill, a delivery. A sales pitch from one is a reason to be careful.
The series tells you which kind of organisation owns the number. No genuine bank or insurer asks for your OTP, PIN or password on a call, whatever number it comes from.
With banks, NBFCs and insurers now required to use 1600 numbers for service calls, a plain 10-digit mobile saying it is your bank deserves extra doubt.
Hang up and ring the number printed on your card, passbook or the company’s official site. A real problem will still be there.
For most, no. For a few sectors, yes, and it is worth knowing which.
The 1600 directions are addressed to the BFSI sector, the banking, financial services and insurance entities regulated by RBI, SEBI, PFRDA and IRDAI, and to government bodies; TRAI’s stated aim is to curb impersonation of trusted financial institutions by fraudsters on ordinary numbers. If your business is one of them, its service and transactional calls to customers were meant to move to 1600 numbers by the deadlines above, and your telecom operator handles the allotment after checking your registration.
Since 10 August 2026 the 1601 series has done the same for its first sectors: electricity, water, city gas and LPG distribution, and courier, express, parcel and freight companies. Operators had 90 days to onboard them, numbers go only to the entities themselves rather than to aggregators, and they may not be used for promotion.
Everyone else, the shop, clinic, dealer, coaching centre or agency that calls its own customers about their own orders and bookings, keeps calling from its ordinary business number. That is the kind of calling RMDialer is built for: one call at a time from the business SIM, with each outcome saved. Promotional calling to people with no relationship to you is a different matter under TRAI’s rules, and TRAI’s 18 September 2026 amendment added new requirements for automated calls; check them for your own use.
An illustration of reading the series, not a real person’s story.
Picture a hardware shop owner in Kolhapur with a current account, a two-wheeler loan and a health policy. Before ten in the morning three unknown numbers ring.
The first begins with 140: a credit card offer. The owner knows it is promotion from a registered telemarketer and, since the shop is registered on DND for that category, reports it through the TRAI app. The second begins with 1600: the insurer, reminding him that the health policy renews next week and confirming the nominee. It is a service call about something he already holds, so he talks, and pays on the insurer’s own app later.
The third is an ordinary 10-digit mobile number. The voice says it is his bank and that his account will be blocked unless he shares the OTP that is about to arrive. Banks were required to move service calls to 1600 numbers by the start of 2026, and no bank asks for an OTP anyway. He hangs up and calls the number printed on his passbook, where the branch confirms nothing is wrong.
"1600 series", "1600 number series" and "1600 series calls" all ask about the same range of numbers. Some people type "160 series" or "1600xx"; both mean the 1600 numbers used by banks, financial services, insurance and government for service calls. The newer 1601 series follows the same idea for utilities, couriers and logistics.
You will also see it called 1600 series, 1600 number series, 1600 series calls, 1600 series number india and 1601 series number. They describe the same thing, so whichever phrase brought you here, this is the page for it.
140 is promotion, 1600 is finance or government service, 1601 is utilities, couriers and logistics. Anything else is an ordinary number.
A 1600 caller should be talking about something you already hold. If the call and the series do not match, be careful.
Never share an OTP. For anything that matters, call back on the official number and check.
A 1600 series number is a telephone numbering series set aside in India for service and transactional calls from banks, financial services, insurance and government organisations. The Department of Telecommunications assigned it, and TRAI directed banks, NBFCs, insurers, mutual funds, brokers and pension bodies to move their service calls to it by early 2026, so people can recognise a genuine call from a regulated financial entity.
They are real, and they are harder to fake than ordinary numbers, because telecom operators allot them only to verified entities in the banking, financial services, insurance and government sectors. A call from a 1600 number should come from such an organisation. Still, never share an OTP, PIN or password on any call; if unsure, call back on the official number.
SEBI announced the new 1600 series in April 2025 as a way to help investors spot genuine calls and avoid fraud, and asked the entities it regulates to use it for calls to investors. TRAI later set deadlines: 15 February 2026 for mutual funds and asset management companies and 15 March 2026 for qualified stockbrokers, with other SEBI intermediaries free to move voluntarily.
Any number that begins with 1600 is from the service and transactional series for banking, financial services, insurance and government. You will see calls from it for things like a loan account, a card, a policy renewal or a KYC update. It is not an emergency number and it is not a promotional line.
A service or transactional call, meaning a call about something you already have with that organisation, such as an account, a payment or a policy. The series is not for promotion. Promotional calls from registered telemarketers use the separate 140 series.
People often say 160 series when they mean the 1600 series, the numbers banks, insurers and government bodies use for service calls. In 2026 a second series, 1601, was added for utilities, couriers and logistics companies. The promotional series is 140.
A newer series for service and transactional calls from sectors other than banking, finance, insurance and government. TRAI started it in Phase I on 10 August 2026 for electricity, water, city gas and LPG distributors and for courier, express, parcel and freight companies, with telecom operators given 90 days to onboard them. It may not be used for promotional calls.
Generally yes, if you have an account, policy or investment with a bank or financial company, because the series is reserved for their service calls. Answer, but treat it like any call about your money: listen, never share an OTP or PIN, and verify on the official number before acting on anything unusual.
Only eligible entities can get one: those regulated by RBI, SEBI, PFRDA or IRDAI, and government organisations. The entity applies to a telecom operator, which verifies its registration before allotting numbers. Ordinary businesses outside those sectors cannot get a 1600 number; utilities, couriers and logistics firms now go to the 1601 series instead.
DND registration is about promotional calls, which come from the 140 series, and it does not switch off genuine service calls about your own account. A 1600 number is not supposed to be used for selling at all. If you get a promotional call from one, report it through the TRAI DND app or 1909.
They should not be. TRAI’s amendment of 18 September 2026 says numbers from the special commercial series, 140xx, 1600xx and 1601xx, shall not be flagged as suspected spam to recipients, so genuine calls from regulated senders are not missed. Caller ID apps may still show their own labels.
Not unless it is regulated by RBI, SEBI, PFRDA or IRDAI, or is a government body; and utilities, couriers and logistics firms now use 1601. A shop, clinic, dealer or agency calling its own customers from its business SIM does not need either series. Promotional calling to strangers is a separate matter, with its own registration and rules.
The 1600 directions are addressed to the regulated entities, the insurers, banks and NBFCs themselves, for their service and transactional calls. How they apply to agents, advisers and channel partners calling on the company’s behalf is for each company and its regulator to say. Ask your company which numbers you may use.
By December 2025, about 570 entities had adopted the 1600 series, using over 3,000 numbers, according to TRAI’s press release of 17 December 2025. Since then the deadlines for banks, NBFCs, insurers, mutual funds, brokers and pension bodies have all passed, so the number has grown.
No. RMDialer is a phone dialer and CRM that businesses use to call their own customers from their own SIM. It does not allot numbers of any series. We explain the 1600 series because our customers and their customers ask about it, and because telling the series apart helps everyone answer the right calls.
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