Aligned with TRAI's NDNC / TCCCPR 2018 framework

Commercial messages that reach inboxes and respect Do-Not-Call

India's NDNC 2018 guidelines (TCCCPR) use a DLT system of registered senders, approved headers, pre-approved templates, recorded consent and Do-Not-Call preferences to stop spam. We list only providers that run it correctly — and help your business stay compliant so your messages actually get delivered.

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NDNC COMPLIANCE — VERIFIED BEFORE LISTING

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DLT registration (sender) ✓ Verified
Header / Sender ID approved ✓ Verified
Content templates approved ✓ Verified
Consent & DND scrubbing ✓ Verified

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What NDNC 2018 requires

The building blocks of compliant commercial comms

The TCCCPR 2018 framework runs on DLT. Here are the pieces every compliant sender and provider must get right.

🪪

DLT Registration (Principal Entity)

Your business registers as a Principal Entity on a DLT platform run by the access providers — the foundation that lets you send any commercial SMS or voice.

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🆔

Header / Sender ID Registration

Six-character sender IDs (headers) registered and approved on DLT, classified as Promotional, Transactional, Service or Government.

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📝

Content Template Registration

Message templates pre-registered and approved on DLT, so only vetted content goes out — unapproved messages are blocked at scrubbing.

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✍️

Consent Acquisition & Management

Digital opt-in captured, recorded and revocable — with a verifiable consent trail that distinguishes promotional reach from service messages.

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🚫

Customer Preferences (DND) Scrubbing

Every send is scrubbed against the National Customer Preference Register so subscribers who've opted out of a category aren't contacted.

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⏰

Time-Window & Category Rules

Promotional calls and messages only in permitted hours (9am–9pm) and aligned to the seven preference categories — respecting customer choice.

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How we vet every partner

We verify NDNC compliance — before we advise

No provider reaches your shortlist, and we never advise on their commercials, until they clear each of these checks. It's how we keep your messaging compliant and deliverable by default.

🪪

DLT registration check

We confirm the provider operates on a recognised DLT platform and supports Principal Entity registration the right way.

🆔

Header & template approval

We verify proper registration and approval of sender headers and content templates, classified by message type.

✍️

Consent & opt-in trail

We check that digital consent is captured, recorded and revocable, with a verifiable audit trail for promotional reach.

🚫

Preference (DND) scrubbing

We confirm every send is scrubbed against customer preferences in the National Customer Preference Register before delivery.

⏰

Time-window & category adherence

We ensure promotional comms respect permitted hours and the seven preference categories, not just blast everyone.

🔄

Ongoing monitoring

Approval isn't permanent — we re-check compliance, watch complaint and blacklist signals, and act on regulatory action.

✓ DLT registered

✓ Headers & templates approved

✓ Consent recorded

✓ DND scrubbed

✓ Time-window honoured

Register on DLT

We point you to the right DLT platform and a compliant provider, and guide your Principal Entity registration.

Approve headers & templates

Get your sender IDs and message templates registered and approved, classified correctly by message type.

Capture & manage consent

Set up a clean opt-in flow with a verifiable consent trail, and an easy way for customers to opt out.

Send compliantly & scrub DND

Go live with a provider that scrubs preferences, respects time windows and keeps your messages deliverable.

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See what NDNC 2018 means for you

A quick guide to sender obligations and customer rights under the guidelines. Pick any to start an enquiry — we'll explain how it applies.

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Why This Matters

Spam isn't just annoying — it's a compliance risk

Under NDNC 2018, messages from unregistered senders, unapproved templates or to opted-out customers get blocked at scrubbing — and repeated violations bring penalties, usage caps and blacklisting. Getting DLT, headers, templates, consent and preference-scrubbing right keeps your communications both legal and deliverable. We make sure the providers you compare run this correctly, and help you set it up on your side too.

DLT registration and approved headers in place
Content templates pre-approved, classified correctly
Recorded consent for promotional reach
Preference (DND) scrubbing on every send

Why buy through Telecoms Supermarket

Built to protect the buyer, not the vendor

Your enquiry stays private

We never share your details with providers until you explicitly approve it. No cold calls from vendors you didn't choose.

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NDNC-compliant providers only

Every provider we list is checked for DLT registration, approved headers and templates, consent handling and DND scrubbing before they reach you.

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We help you stay compliant

Beyond matching you with a provider, we guide your DLT registration, headers, templates and consent setup — so your side is compliant too.

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Common Questions

DoT, approvals and licensing — explained

"NDNC" refers to India s Do-Not-Call / customer-preference framework for commercial communications, now governed by TRAI s TCCCPR 2018 (Telecom Commercial Communications Customer Preference Regulations). It uses a DLT (distributed ledger) system to register senders, sender IDs (headers) and message templates, capture consent, and scrub every message against customer preferences — so subscribers only get the commercial calls and SMS they ve agreed to.

DLT (Distributed Ledger Technology) is the blockchain-based system the access providers use to control commercial messaging. Any business sending commercial SMS or voice must register as a Principal Entity on a DLT platform, then register its headers and content templates. Without registration, your messages are treated as unverified and blocked at scrubbing. We point you to the right platform and a provider who handles it correctly.

A header (Sender ID) is the short identifier a message comes from — registered and classified as Promotional, Transactional, Service or Government. A content template is the actual message format, pre-registered and approved so only vetted content goes out. You need both: an approved header to send from, and approved templates for what you send. Unapproved combinations fail scrubbing.

DND (Do Not Disturb) lets subscribers register preferences in the National Customer Preference Register — either fully blocking promotional communication or blocking specific categories. There are seven categories (such as banking/finance, real estate, education, health, consumer goods, communication/entertainment, and tourism). Senders must scrub against these preferences, and promotional contact is restricted to permitted hours. Service and transactional messages with valid consent are treated differently.

Yes. We match you with NDNC-compliant providers and guide you through your own obligations — DLT Principal Entity registration, header and template approval, consent capture and preference scrubbing — so both the provider and your setup are compliant. We re a comparison and advisory platform, not the regulator, so this is general guidance; we ll always recommend confirming specifics with TRAI or your access provider for your exact case.

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