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A Complete Guide on DLT Registration

A Complete Guide on DLT Registration

Profile Headshot of Satyam Gupta
Satyam Gupta

5
mins read

November 7, 2023

Key Takeways

  1. DLT registration is an advanced blockchain based technology introducted by TRAI in India to ensure secure SMS communication by businesses
  2. The primary motive of DLT registration is to manage and regulate a secure flow of SMS and avoid any sort of spam
  3. DLT registration has multiple participating entities like service provider, telecom operator etc. and has different implications for each entity
  4. DLT registration includes entity registration, sender ID registration and template registration
  5. OTP SMS is a use case where you can bypass DLT registration. Verify Now can help you enable the same

DLT or Distributed Ledger Technology (DLT) is a revolutionary technological advancement that has taken the telecom industry by storm. It is predominantly used for sending SMS, its application has been significantly amplified in India, thanks to the stringent regulations imposed by the Telecom Regulatory Authority of India (TRAI).

Although, critical use cases like OTP SMS can even be enabled without DLT registration using providers like Message Central. You can send a DLT SMS i.e. an OTP SMS using their content template and customize the same for your brand name.

This comprehensive guide aims to shed light on DLT, its significance and the DLT registration process. Without further ado, let's delve into the details.

Unlocking the Concept of DLT

What is DLT?

DLT, an acronym for Distributed Ledger Technology, is a decentralized digital system devised for recording and managing sender IDs and templates.

Fundamentally, it functions as a digital ledger, recording transactions and their details across a network in multiple locations. The DLT platform ensures the security and transparency of commercial SMS communications, reducing the risk of spam and fraud.

Why is DLT Essential?

  1. The primary purpose of introducing DLT is to regulate and manage the flow of communications, such as SMS and voice calls.  
  2. DLT creates a transparent and decentralized system that fosters collaboration among telecom operators, businesses, and regulatory authorities to deliver a trustworthy experience.
  3. The implementation of DLT brought about regulation and fair play to the usage of SMS.  
  4. It also put an end to the problems that businesses and customers faced due to spam messages. Therefore, DLT is deemed necessary to protect customers from unsolicited communication and fraudulent activities.

Understanding the TRAI's Role in DLT

TRAI and DLT: What's the Connection?

The Telecom Regulatory Authority of India (TRAI) introduced DLT to regulate the bulk SMS industry in India. As per the guidelines set by TRAI, businesses cannot send bulk SMS or voice messages in India without completing the DLT registration process.

The high percentage of spammers led to an increase in fraudulent activities, inability to track SMS senders, and difficulty in penalizing scammers. To alleviate these issues, TRAI introduced DLT to regulate the use of SMS in India effectively. DLT works on the principle of distributed technology, eliminating the need for a centralized control or database. It ensures that any unauthorized data changes are eliminated by matching the information with the changes required.

In the telecom sector, DLT regulates and manages the flow of SMS and voice SMS. It reduces spam and fraud by permitting only authorized businesses to conduct business via SMS.

The Implications of DLT for Different Parties

Customers

From a customer's perspective, DLT offers more control over their consent and preferences. It enhances security and privacy for their data, ensuring a quick and easy complaint resolution.

Bulk SMS Service Providers

For bulk SMS service providers, DLT reduces the risk of fraudulent activity due to the regulatory compliances they must adhere to. It also reduces the upfront cost of starting a telemarketing business.

Business Owners

For business owners, DLT offers several benefits. It enables them to target and reach their audience according to their interests and preferences. Their client data is stored safely and securely, even when shared with other entities. Plus, their SMS messages get a verification badge after authentication and verification via DLT, thereby enhancing brand awareness.

DLT Glossary: Terms You Need to Know

To understand the DLT registration process better, here are some key terms and their definitions:

  1. Principal Entity: An individual, firm, government agency, or business trying to send SMS to their customers.
  2. End Customer: The mobile subscriber who will receive your SMS.
  3. Service Provider: These are the bulk SMS providers, also known as telemarketers.
  4. Telecom Operators: Also known as access providers, they help in the regulation process.
  5. Regulator: The regulator establishes the regulatory compliance needed for commercial communication’s smooth and efficient functioning.

DLT Registration Process: A Step-by-Step Guide

The DLT registration process is divided into three phases: Entity registration, Sender ID registration, and Template registration

  1. Entity Registration: Registering your business with a verified operator is the first step. To do this, you will need your Business PAN, GST certificate, and Company registration certificate.
  2. Sender ID Registration: After entity registration, you need to register your sender ID on DLT. Without a sender ID, you cannot send SMS.
  3. Template Registration: This is the final phase, where the operator will approve or reject your SMS template.

DLT Registration with Vodafone

You can find your entity/ registration Id in the profile section as shown below: -

DLT Registration with Vodafone by Message Central

You’d also want to register for a content template as shown below.

DLT Content Template Registration with Vodafone by Message Central

Conclusion

DLT registration is a vital aspect of managing and sending SMS in India. It offers numerous benefits to business owners, customers, and service providers by ensuring transparency, security, and regulatory compliance. Whether you're sending a promotional SMS or an OTP SMS using an SMS API, DLT registration is mandatory as per TRAI guidelines. Therefore, it's crucial to understand the DLT registration process and comply with it to effectively manage your SMS services.

Get Started with OTP SMS Without DLT Registration

With Verify Now, you can start sending OTP SMS for user authentication or multiple other use cases without any need for DLT registration. Using Verify Now, you can start sending OTPs in 3 simple steps.

Steps to authenticate users using verify now product by Message Central

Frequently Asked Questions

How do I choose the right OTP service provider?

When selecting an OTP SMS service provider, focus on:

  • Delivery reliability and speed
  • Global coverage and local compliance
  • Multi-channel support and fallback
  • Ease of integration
  • Pricing transparency

The right provider should not just send OTPs but ensure they are delivered consistently across regions and networks.

Not all OTP SMS service providers are built the same.

Some optimize for cost, others for flexibility but very few balance delivery reliability, global coverage and ease of use. And that balance is what actually impacts whether your users receive OTPs on time.

If OTP is critical to your product, focus on:

  • reliable delivery (not just sending)
  • multi-channel fallback
  • scalability across regions

Try It for Yourself

Why is multi-channel OTP important?

Relying only on SMS can lead to failed verifications due to:

  • network issues
  • telecom filtering
  • device limitations

Multi-channel OTP systems (SMS + WhatsApp + voice) improve success rates by automatically retrying through alternative channels if one fails.

What is the best OTP SMS service provider in India?

Some of the commonly used OTP SMS service providers in India include MSG91, Exotel and 2Factor.

That said, India has additional challenges like DLT compliance and operator filtering. Platforms that handle these internally while also offering fallback options tend to provide more consistent OTP delivery.

Which is the cheapest OTP service provider?

Providers like Fast2SMS and 2Factor are often considered among the cheapest OTP service providers, especially in India.

However, lower pricing can come with trade-offs such as:

  • lower route quality
  • higher delivery delays
  • limited fallback options

For mission-critical OTP flows, reliability often matters more than just cost.

Which is the best OTP service provider in 2026?

The best OTP service provider depends on your use case.

  • For global scale and flexibility: Twilio, Infobip
  • For cost-effective APIs: Plivo
  • For India-focused SMS OTP: MSG91, Exotel

However, platforms like Message Central stand out by balancing global coverage, multi-channel fallback and ease of deployment, making them suitable for businesses that prioritize delivery reliability.

What is an OTP service provider?

An OTP service provider enables businesses to send temporary verification codes to users via channels like SMS, WhatsApp or voice to authenticate logins, transactions or sign-ups.

Modern OTP SMS service providers go beyond just sending messages, they ensure reliable delivery using optimized routing, retries and sometimes multi-channel fallback.

Ready to Get Started?

Build an effective communication funnel with Message Central.

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