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🏛️ TRAI Mandated

DLT Registration for
Bulk SMS in India

Mandatory for every business sending SMS in India. Nesark's experts handle your complete DLT registration, entity approval, Sender ID, and templates in 24–48 hours.

Why DLT Registration is
Mandatory in India

DLT (Distributed Ledger Technology) registration is a mandatory requirement set by TRAI (Telecom Regulatory Authority of India) for any organization that wants to send SMS messages in India. The technology is designed to reduce spam, increase telecom subscriber safety, and improve trust.

A Business Entity must register itself on the DLT portal, register Sender IDs, submit message templates, and get their approval before sending Bulk SMS.

⚠️ Without DLT Registration

Bulk SMS will NOT be delivered. OTP messages will fail. Your business cannot legally send any SMS in India. Register once — data is synced across all telecom operators automatically.

📋 Key DLT Components
🏢
Entity Registration
Register your business as a Principal Entity on the DLT portal
📤
Header (Sender ID) Registration
Register the 6-character Sender ID (e.g. NESARK) used in your messages
📝
Template Registration
Submit and get approval for all SMS message templates before sending
🔗
CTA Whitelisting & PE-TM Binding
Whitelist any links used in SMS and bind your Telemarketer account

Watch: DLT Registration Step-by-Step

Complete video guides by Nesark — Entity registration, Sender ID, Template submission, and more explained in detail.

Free DLT Registration Process
Complete step-by-step entity registration guide
Sender ID (Header) Registration
How to register your Sender ID on DLT portal
SMS Template Registration
Submit and get approval for your SMS templates
PE-TM Binding & CTA Whitelisting
Complete your DLT setup with binding and whitelisting
▶ View all tutorials on Nesark YouTube Channel →

What You Need for DLT Registration

🏢 For Companies / LLPs
  • MSME Registration / Incorporation Certificate / GST
  • Company PAN Card
  • Aadhaar Card of Business Owner
  • LOA (Letter of Authorization) on company letterhead
  • Valid Email & Mobile Number
👤 For Proprietors / Individuals
  • Aadhaar Card of Business Owner
  • Owner PAN Card
  • GST Certificate (if available)
  • Shop & Establishment Certificate
  • Valid Email & Mobile Number

💡 Pro Tip from Nesark

Ensure PAN, GST, and address proof details match exactly, mismatches are the #1 cause of DLT rejection. Our team verifies all documents before submission to ensure first-attempt approval. Download LOA Format →

Complete DLT Registration Process

Follow these 4 steps to complete your DLT registration. Total time: 24–48 hours.

1
Choose DLT Operator
Pick SmartPing (recommended), Jio, Airtel, BSNL, or any TRAI-authorized platform
2
Register Entity & KYC
Create account, upload business documents, and complete KYC verification online
3
Register Sender ID & Templates
Add your 6-character Sender ID (Header) and all SMS message templates for approval
4
Get Approved & Send
Receive approvals in 24–48 hrs. Link to your Nesark account and start sending
Get Nesark's DLT Help →

Understanding SMS Route Types

📢 Promotional Route
Marketing SMS to Non-DND numbers only. Allowed between 10 AM – 9 PM. Uses numeric Sender ID.
🔒 Transactional Route
Reserved for Banks sending OTP SMS only. Works on DND & Non-DND 24×7.
🔔 Service Implicit Route
Login OTPs, order updates, alerts. Works on DND & Non-DND 24×7. Most used by businesses.

Important TRAI
New Updates

🚨 Effective May 7, 2025

The Service Explicit category is no longer available for new template registration. All existing Service Explicit templates are automatically reclassified under Promotional category.

📌 New Header Suffix Rules
-P
Promotional
-S
Service
-T
Transactional
-G
Government
Example: TX-ABCD-P (Promotional)  |  TX-ABCD-S (Service)  |  TX-ABCD-T (Transactional)

DLT Registration Portal Links

Register on any one portal — data syncs automatically across all operators. We recommend SmartPing for fastest approval.

SmartPing
RECOMMENDED
✅ 2 Year Validity
📡
Jio
Register →
1 Year Validity
📶
Airtel
Register →
1 Year Validity
📱
VILPOWER
Register →
1 Year Validity
🏢
Tata
Register →
1 Year Validity
🌐
BSNL
Register →
1 Year Validity
🔌
Connect
Register →
1 Year Validity
📞
MTNL
Register →
1 Year Validity
📄
LOA Format
DOWNLOAD
💬
SMS Portal
LOGIN →
💰 DLT Registration Fee: ₹5,000 + 18% GST — Includes Entity, Header & Template approval  |  SmartPing: 2 Year Validity  ·  Others: 1 Year Validity

⚡ Register on any one platform — DLT data is automatically synced across all operators in India. No need to register multiple times.

Frequently Asked Questions

Everything you need to know about DLT registration for bulk SMS & OTP in India.

Visit https://smartping.live/entity/signup/Indian to register on the SmartPing DLT portal. It is our recommended platform for fastest approval timelines and wide operator compatibility across all Indian telecom networks.
DLT registration fee is ₹5,000 + 18% GST (one-time), paid directly to the DLT portal — not to Nesark. SmartPing provides 2 year validity, while other operators provide 1 year validity. This is why we recommend SmartPing — longer validity means better value. Renewal is required after the validity period.
DLT registration is mandatory to: prevent SMS fraud and spam, ensure transparency in bulk messaging, verify sender identity and message content, and comply with TRAI regulations. Without DLT, businesses cannot legally send bulk SMS or OTP messages in India.
Required documents: PAN Card (Company or Individual), Aadhaar Card, MSME Registration / Incorporation Certificate / GST Certificate, LOA (Letter of Authorization) on company letterhead, and a valid Email & Mobile number.
Yes, DLT registration is 100% online and can be completed through official DLT portals without visiting any office. The entire process — from entity registration to template approval — is done digitally from anywhere in India.
Yes. DLT registration is mandatory for OTP, transactional, and service SMS. Without DLT approval, OTP messages will fail delivery. There are no exceptions regardless of message volume or business size.
No. Registering on one DLT platform is sufficient — DLT data is automatically synced across all operators in India. You can register on any platform (SmartPing, Jio, Airtel, BSNL, etc.) and it will work with all telecom operators.
DLT registration typically takes 24–48 hours for entity approval, followed by another 24–48 hours for Sender ID and template approval. With complete documents the entire process is usually completed within 2–4 business days. 👉 With NESARK support, DLT registration can be completed in as fast as 2–3 hours (subject to correct documents).
The Service Explicit category is no longer available for new template registration. All existing Service Explicit templates are automatically reclassified under Promotional. Additionally, all SMS headers now require suffixes: -P (Promotional), -S (Service), -T (Transactional), -G (Government). Example: TX-ABCD-P.
Absolutely! Nesark has a dedicated team skilled at DLT registration. We verify all documents, prepare the application, submit on your behalf, and follow up until approval. Contact us for a free consultation →

Need Help with DLT Registration?

Our experts handle the complete process — document verification, submission & follow-up — so you can focus on your business. Free consultation, no obligation.

Talk to a DLT Expert Contact Us