DLT Registration for SMS in India — Complete Guide + Free Assisted Setup
Everything you need to register your business on India’s DLT (Distributed Ledger Technology) platform under TRAI’s TCCCPR — entity, header and content templates explained step by step. Get your SMS delivered without blocks, and let us handle the whole registration for free when you onboard.
What is DLT registration?
DLT stands for Distributed Ledger Technology — a blockchain-style registry that every Indian telecom operator uses to record who is allowed to send commercial SMS, which sender IDs (headers) they own and exactly what message templates they are approved to send. Registering on it is what makes your business a verified, trusted sender.
DLT registration was mandated by TRAI (the Telecom Regulatory Authority of India) under the TCCCPR 2018 — the Telecom Commercial Communications Customer Preference Regulations. The goal is simple: stop spam and phishing by ensuring only registered businesses, using pre-approved sender IDs and templates, can reach subscribers. Once you are registered, your details are shared across all operators (Jio, Vi, Airtel and BSNL), so a single registration works everywhere.
In practice, DLT registration links three things together — your business identity, your sender ID and your message content. Any SMS you send is matched against these records in real time. If everything matches, the message is delivered. If anything is missing or altered, it is blocked. This guide walks through every piece so you can get registered right the first time — or let our team do it for you free of charge.
Why DLT registration is mandatory
Since TCCCPR 2018 came into force, DLT registration is not optional for anyone sending commercial SMS in India — whether it is OTPs, alerts, or marketing offers. Operators are legally required to reject traffic from unregistered senders.
The compliance requirement
TRAI holds telecom operators responsible for the messages that flow through their networks. To meet that, every operator now verifies each SMS against the DLT ledger — the sending entity, the header and the content template must all be registered and matched before delivery. There is no legitimate route to bulk SMS in India that bypasses DLT.
What happens if you are not registered
Unregistered messages are stopped during scrubbing — the automated check operators run on every SMS. Without a registered entity your traffic is rejected outright; with a registered entity but an unregistered header or template, individual messages are blocked. The result is failed OTPs, undelivered alerts and lost campaigns — often with no clear error until you check delivery logs.
Registration protects your brand too: a verified header stops others from spoofing your name, and pre-approved templates keep your messaging consistent. Whether you need transactional SMS or promotional SMS, DLT is the gateway to reliable delivery.
The 3 building blocks — Entity, Header, Template
Every DLT registration is built from three linked records. Understand these and the whole process becomes clear.
1. Principal Entity (PE ID)
Your registered business identity on the DLT platform. Once your PAN, GST and KYC are verified you receive a unique 19-digit Principal Entity ID (PE ID) that all your headers and templates hang off.
2. Header (Sender ID)
The 6-character name or number recipients see as the sender — e.g. SGWPRO. Alphanumeric headers carry transactional and service SMS; numeric headers carry promotional SMS. Each header is tied to your entity.
3. Content Template (Template ID)
The exact message you are approved to send, with variable placeholders like {#var#}. Each approved template gets a Template ID, and your live SMS must match it word for word.
The rule to remember: an SMS is delivered only when a registered entity sends from a registered header using a registered template — all three linked together on the ledger.
Documents required for DLT registration
The documents you upload depend on your business type. Having clean, matching copies ready avoids the most common cause of rejection.
| Business type | Core documents required |
|---|---|
| Private / Public Ltd Company | Company PAN, GST certificate, Certificate of Incorporation, authorization letter on letterhead, and PAN + Aadhaar of the authorized signatory. |
| LLP / Partnership Firm | Firm PAN, GST certificate, LLP agreement or partnership deed, authorization letter, and PAN + Aadhaar of the authorized partner. |
| Proprietorship | Proprietor PAN, GST certificate (or shop/business registration), business registration proof, and proprietor PAN + Aadhaar for KYC. |
| Individual | Individual PAN and Aadhaar, plus a valid GST or a declaration where the operator portal permits individual (non-GST) registration. |
Tip: the business name on your PAN, GST and incorporation documents must match exactly — even a small difference (Pvt vs Private) can delay entity approval.
Step-by-step DLT registration process
Registration follows the same seven stages on every operator portal. Here is the complete flow from start to your first delivered message.
Choose an operator portal
Register on any one operator’s DLT portal — Jio, Vi, Airtel or BSNL. A single registration is recognised across all networks, so you do not need to repeat it.
Register the Principal Entity
Submit PAN, GST, incorporation proof and an authorization letter. After verification you receive your Entity ID (PE ID), usually within 1–3 days.
Register your Header
Apply for a 6-character sender ID — alphanumeric for transactional/service SMS, numeric (6-digit) for promotional SMS. It must reflect your brand.
Register Content Templates
Add each message you will send, using {#var#} placeholders for dynamic parts. Every approved template returns a Template ID.
Register a Consent Template
For promotional and service-explicit traffic, register a consent template that documents how recipients opted in to receive your messages.
Link entity, header & template
Map your header and templates to your chosen telemarketer / aggregator so the ledger connects your identity to your sending route.
Send & pass scrubbing
Go live. Each SMS is scrubbed against the ledger in real time — matched messages deliver instantly, so your OTPs, alerts and campaigns flow through.
Prefer to skip the paperwork? Our team completes all seven steps for you free when you onboard for SMS.
Header rules — numeric vs alphanumeric
The type of header you register decides what kind of SMS you can send from it. Getting this right up front avoids re-registration.
Alphanumeric header (6 characters)
A 6-character brand code such as SGWPRO or HDFCBK. Used for transactional and service SMS — OTPs, alerts, confirmations and relationship messages. These reach recipients around the clock, including DND-registered numbers for genuine service content.
Numeric header (6 digits)
A 6-digit numeric sender ID such as 123456. Used for promotional SMS — offers, discounts and campaigns. Promotional traffic is scrubbed against the DND registry and delivered only within the permitted 9 AM–9 PM window.
A single entity can register multiple headers of both types. Choose alphanumeric for anything the user triggers or expects, and numeric for marketing you push out.
Content template categories explained
Every template is registered under a category that controls which header it uses and whether DND and timing rules apply. Picking the correct category is essential for delivery.
| Category | Purpose | Header type | DND / timing |
|---|---|---|---|
| Service Implicit | Info tied to an existing action — OTPs, order and delivery updates. | Alphanumeric | Delivered 24×7, DND-exempt |
| Service Explicit | Service messages needing recorded consent — e.g. renewal or usage nudges. | Alphanumeric | 24×7 with valid consent |
| Promotional | Marketing offers, discounts and campaign blasts. | Numeric | DND-scrubbed, 9 AM–9 PM only |
| Transactional | OTPs for banks and payment (RBI-regulated) entities only. | Alphanumeric | Delivered 24×7, DND-exempt |
| Government | Messages from central/state government departments and agencies. | Alphanumeric | Delivered 24×7, DND-exempt |
How to write a compliant template
A template is approved only when its fixed text is exact and its variables are marked correctly. Follow these rules to avoid rejection:
- Use {#var#} for every dynamic value (name, OTP, amount, date). Each variable can hold up to about 30 characters.
- Never place two variables back-to-back — keep fixed text between placeholders so operators can match the message.
- The fixed wording you send must be an exact text match to the approved template — even punctuation differences cause blocks.
- Include your brand name and register any URLs so links are whitelisted rather than stripped.
How scrubbing works — why SMS gets blocked
“Scrubbing” is the real-time check operators run on every commercial SMS. Understanding the chain shows exactly where a message can fail.
1. Principal Entity
Your registered business submits the SMS with its PE ID, header and template ID attached.
2. Telemarketer / Aggregator
Your SMS partner passes the message onto the network, carrying the ledger references for verification.
3. Operator DLT check
The operator scrubs the message against the ledger — entity active, header owned, template matched, category and consent valid.
If every link in the chain matches, the SMS is delivered in milliseconds. If the entity is inactive, the header is not linked, the template does not match, or a promotional message targets a DND number, the operator drops it at this stage. That is why registration accuracy — not send speed — is what governs your delivery rate.
DLT registration fees & timelines
DLT charges are a small, mostly one-time cost. The entity registration is the only significant fee — headers and templates are usually free.
| Item | Typical fee | Timeline |
|---|---|---|
| Principal Entity (PE) registration | ₹5,000 + ₹900 GST (one-time) | 1–3 days |
| Header (Sender ID) | Free to ~₹500 per header | 1–2 days |
| Content Template | Free (each template) | 1–3 days |
| Total to go live | ~₹5,900 one-time | 7–10 working days |
Fees vary slightly by operator — BSNL’s entity registration is around ₹3,300, for example. When you take SMS with us, we absorb the assisted-registration work at no charge; you only pay the operator’s statutory entity fee. See SMS pricing for message rates.
DLT platforms & operators in India
Each major operator runs its own DLT portal, and several aggregator platforms provide access too. You register on one — and every network honours it.
Jio TrueConnect
Reliance Jio’s DLT portal — one of the most widely used entry points for entity and header registration.
Vi Vilpower
Vodafone Idea’s DLT platform for registering your entity, headers and templates.
Airtel DLT
Bharti Airtel’s commercial communication portal for principal entities.
BSNL DLT
The public-sector operator’s DLT registration portal, with its own fee structure.
Tanla
A leading aggregator platform providing DLT onboarding and scrubbing services.
PingConnect
An aggregator DLT platform used for entity, header and template management.
One registration, recognised everywhere: because operators share the DLT ledger, your entity, headers and templates registered on any one portal are valid across Jio, Vi, Airtel and BSNL.
Common reasons DLT registration & messages fail
Most delivery problems trace back to a handful of avoidable mismatches. Check these before you blame the route.
- No registration — sending before your entity, header or template is approved means guaranteed blocking.
- Header or entity name mismatch — PAN, GST and header details that do not match cause rejection at approval.
- Unregistered or edited template — sending text that differs from the approved template fails the exact-match check.
- Wrong category — promotional content sent on a service template (or vice versa) is scrubbed out.
- Promotional to DND — marketing SMS to DND-registered numbers is blocked by design.
- Unwhitelisted URLs — links not declared during registration are stripped or cause the SMS to fail.
Who needs DLT registration?
Any organisation sending commercial SMS to Indian numbers needs to be DLT-registered — here are the sectors that rely on it most.
Banks & NBFCs
OTPs, transaction alerts and statements — the highest-volume transactional senders.
E-commerce
Order confirmations, dispatch and delivery updates plus promotional campaigns.
Edtech & education
Admission drives, class reminders, results and fee alerts.
Healthcare
Appointment reminders, reports-ready alerts and consent-based health promos.
Logistics
Shipment tracking, out-for-delivery and proof-of-delivery notifications.
Real estate
New listings, site-visit invites and price-drop alerts to opt-in buyers.
Fintech
Payment OTPs, wallet updates, KYC prompts and repayment reminders.
Agencies & resellers
Marketing agencies registering headers and templates on behalf of clients.
Free assisted DLT registration by us
Skip the portals, the paperwork and the rejections. When you onboard for SMS with us, our compliance team registers your entity, header, content templates and consent template for you — free of charge.
Full registration handled
Entity, headers, templates and consent — we prepare, submit and follow up on every step.
5,000+ businesses
Trusted by more than 5,000 businesses across India for compliant, delivered messaging.
15+ years experience
Over 15 years in Indian messaging means we know every operator’s portal and quirks.
24×7 support, all operators
Round-the-clock help and registration valid across Jio, Vi, Airtel and BSNL.
