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NSE13 Aug 2026circularPrepared by Complied AI

Implementation of 1600 Series Number for Outbound Investor Calls

NSE circular NSE/ISC/ 75749 · 13 Aug 2026

Official title

Implementation of 1600 series number by Investor Services Center for outbound calls to Investors

Official record

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Summary

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What changed

The National Stock Exchange of India Limited implements a dedicated 1600 series number for outbound calls. The Investor Service Centres and the Defaulter department use the number 1600322410 for these calls. This number only supports outbound communication. Participants cannot call or send messages to this number. Participants continue to use the toll-free number 1800 266 0050 to contact the Exchange. The Exchange advises participants not to disclose personal information such as PAN, Aadhaar, bank details, or passwords during calls. This measure helps investors identify official calls and prevents fraud.

Who is affected
  • All market participants
Required action
  • Do not disclose personal information such as PAN, Aadhaar, bank account details, card details, login ID, login passwords, or one-time passwords over calls.
  • Use the toll-free number 1800 266 0050 to contact Exchange departments.
Key dates
  • Effective date for the use of the 1600 series number — 14 Aug 2026
Exceptions
  • The 1600322410 number does not accept incoming calls or messages.

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Source details

Source
National Stock Exchange of India
Type
circular
Published by source
13 Aug 2026
Document number
NSE/ISC/ 75749
Issuing division
INVESTOR SERVICES CELL
Effective date
14 Aug 2026
Coverage area
securities

Document text

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National Stock Exchange of India Limited

Circular

Department: INVESTOR SERVICES CELL
Download Ref No: NSE/ISC/ 75749Date: August 14, 2026
Circular Ref. No: 38/2026

To All Market Participants,

Sub: Implementation of 1600 series number by Investor Services Centre for outbound calls to Investors.

All market participants are requested to note that w.e.f August 15, 2026, the Investor Service Centres of the Exchange and the Defaulter department, shall henceforth be calling from a dedicated number i.e. 1600322410. This number is intended only for initiating outbound calls; and participants will not be able to call or send messages to us using this number.

Participants should continue using Exchange Toll free number 1800 266 0050 for contacting the Exchange departments.

Market participants are advised NOT to disclose any Personal Information such as PAN, Aadhaar, Bank account details, Card details, Login ID, Login Passwords or One-Time Passwords over the calls.

This initiative aims to help investors easily identify official calls from the NSE Investor Services Centre and differentiate them from potentially fraudulent or impersonation calls. Through this initiative, we seek to promote safer investor communication, build trust and awareness, and empower investors to stay alert and protect themselves from fraud.

In case of any clarifications, investors may write to ignse@nse.co.in

For and on behalf of National Stock Exchange of India Limited

Dinaz Shroff Associate Vice President

Toll Free NoEmail id
1800-266-0050 (select option 5)ignse@nse.co.in

Regd. Office : National Stock Exchange of India Limited | Exchange Plaza, C-1, Block G, Bandra Kurla Complex, Bandra (E), Mumbai - 400 051, India +91 22 26598100 | www.nseindia.com | CIN U67120MH1992PLC069769

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