A Regulatory Initiative to Strengthen Customer Safety 

1. Background of the Change 

The Telecom Regulatory Authority of India (TRAI) has introduced a structured and time

bound mandate requiring all regulated entities in the Banking, Financial Services and 

Insurance (BFSI) sector to transition to the ‘1600’ phone number series for all service and 

transactional calls. 

This directive was issued on December 16, 2025, with a compliance deadline of March 15, 

2026. 

The move has been implemented in consultation with key financial regulators including: 

• Reserve Bank of India (RBI) 

• Securities and Exchange Board of India (SEBI) 

• Insurance Regulatory and Development Authority of India (IRDAI) 

• Pension Fund Regulatory and Development Authority (PFRDA) 

The Department of Telecommunications (DoT) has officially allocated the ‘1600’ 

numbering series exclusively for BFSI institutions and government organisations. 

2. Why Has This Change Been Introduced? 

In recent years, impersonation-based financial frauds have increased, with fraudsters 

using regular 10-digit numbers to pose as trusted financial institutions. 

To address this concern, TRAI has mandated a dedicated calling series so customers can: 

• Easily identify genuine service and transactional calls 

• Distinguish regulated financial calls from spam or scam calls 

• Reduce the risk of fraud due to impersonation 

• Gain greater confidence while engaging over phone 

TRAI has emphasised that a structured and time-bound adoption of the 1600-series will 

significantly improve consumer safety. 

As of now: 

• Over 570 regulated entities have adopted the 1600 series 

• More than 3,000 individual numbers have already been activated 

3. What This Means for HDFC Securities Customers 

In compliance with this regulatory mandate, official service and transactional calls from 

HDFC Securities, including calls from your Relationship Manager and branch teams, will 

originate from: 

Primary Number: 1600 314 314 

Secondary Number: 1600 300 300 

If you receive a call from the above numbers, you can confidently identify it as an official 

communication from HDFC Securities. 

4. How This Benefits You 

This transition ensures: 

✔ Clear identification of official calls 

✔ Reduced risk of impersonation-based fraud 

✔ Greater transparency in financial communication 

✔ Enhanced customer trust and security 

5. What You Should Do 

• Save the official 1600 numbers in your contact list 

• Verify the number prefix before sharing any information 

• Never share confidential details unless you are certain of the caller’s authenticity 

Your safety and financial well-being remain our highest priority. 

Commitment to Secure Communication 

HDFC Securities remains fully aligned with regulatory guidelines and continues to take 

proactive steps to safeguard customer interests. 

For any queries, please reach out to your Relationship Manager or your nearest HDFC 

Securities branch. 

Happy Investing!