Sri Lanka · TRCSL

A2P SMS regulations in Sri Lanka.
Compliance with TRCSL rules and sender-ID registration.

A2P SMS to Sri Lanka is regulated by the Telecommunications Regulatory Commission of Sri Lanka (TRCSL). TRCSL + operator sender ID registration. Sinhala, Tamil, English all supported, with approval typically taking 5-10 business days. Sri Lanka PDPA 2022 enforced. BroadNet carries this traffic over direct operator connections.

By the numbers

TRCSL

Telecommunications Regulatory Commission of Sri Lanka regulates A2P messaging

5-10 days

Typical sender-ID approval time

99.99%

Platform uptime SLA

Carrier-grade infrastructure, operating since 2003.

Who regulates A2P SMS in Sri Lanka?

Application-to-person messaging to Sri Lanka is overseen by the Telecommunications Regulatory Commission of Sri Lanka (TRCSL), which licenses the operators that terminate A2P traffic and sets the conditions those routes run under. BroadNet delivers into Sri Lanka over direct operator connections — Dialog Axiata, Mobitel and Hutch Sri Lanka — rather than through resold or grey routes, so the sender ID, the delivery receipt and the audit trail all come back from the licensed path.

Telecoms regulator: Telecommunications Regulatory Commission of Sri Lanka (TRCSL).
Direct operator routes: Dialog Axiata, Mobitel and Hutch Sri Lanka.
Sender-ID registration: TRCSL + operator sender ID registration. Sinhala, Tamil, English all supported.
Typical lead time: 5-10 business days.

Sender ID registration in Sri Lanka

TRCSL + operator sender ID registration. Sinhala, Tamil, English all supported. Registration is not a formality — an unregistered or mismatched sender ID is the most common reason otherwise-valid traffic is filtered, and the failure is usually silent rather than a hard rejection. Plan 5-10 business days for approval and register before you need the route, not during a launch.

Lead time: 5-10 business days.
BroadNet files sender IDs on your behalf through the TRCSL-licensed operators.
Sinhala / Tamil / EN: All three at parity.
Time to production: Live in 5–15 business days from test-access request to production.

Consent, content and timing rules

Sri Lanka PDPA 2022 enforced. TRCSL's promotional-messages guidelines bar promotional messages from 20:00 to 08:00. Timing is enforced rather than advisory: a promotional send that lands outside the permitted window is a compliance event regardless of how the list was built. Transactional messages — one-time passcodes, delivery and account alerts — are treated differently from marketing, but the distinction is decided by the content of the message rather than by how the campaign is labelled.

TRCSL sender ID: Sender IDs registered via operator route.
PDPA 2022: Sri Lanka Personal Data Protection Act enforced.
Sinhala / Tamil / EN: All three at parity.
No promotional messages 20:00-08:00 (TRCSL guidelines).

What this means for your integration

Practically, three things decide whether traffic to Sri Lanka performs: a registered sender ID on a TRCSL-licensed route, a consent and opt-out record you can evidence, and message content that matches the category it was registered under. BroadNet's compliance engine checks each submission against the Sri Lanka ruleset before it reaches the operator, so a non-compliant send is rejected back to you rather than filtered silently downstream — which is the difference between a fixable error and traffic that quietly disappears.

Every message returns a delivery receipt (DLR); BroadNet does not publish per-country delivery percentages.
Indicative list pricing: USD 0.025 – 0.045 per message.
Addressable mobile base: 29M subscribers.
PDPA 2022: Sri Lanka Personal Data Protection Act enforced.

DiagramSender ID registration, step by step

Submit your KYC packTrade licence, authorisation letter and sample messages
BroadNet files the applicationWith the operators or the regulator, as the market requires
Review and approvalTypical lead time5-10 business days
Send under your brandYour approved sender ID on every message

Sri Lanka

Sri LankaOther BroadNet marketsBroadNet HQ, Dubai

Technical facts

Technical facts for Sri Lanka

Network codes, message lengths and sender-ID rules in one table. Segment lengths are the GSM standard values (3GPP TS 23.038).

Technical facts for Sri Lanka
Mobile country code (MCC)	413
Dialling code	+94
Operators (MCC-MNC)	Dialog Axiata · 413-02 Mobitel · 413-01 Hutch Sri Lanka · 413-08
SMS length, GSM-7 (Latin alphabet)	160 characters in a single SMS; 153 per part when concatenated
SMS length, UCS-2 (Arabic, Cyrillic and other scripts)	70 characters in a single SMS; 67 per part when concatenated
Regulator	TRCSL (Telecommunications Regulatory Commission of Sri Lanka)
Sender-ID rules	TRCSL + operator sender ID registration. Sinhala, Tamil, English all supported.
Sender-ID lead time	5-10 business days

Sources

Last reviewed September 29, 2026

How we write and review content

Related markets

Compare A2P SMS rules across the region.

Each market pairs a regulatory playbook with its live coverage and operator-direct routing detail.

Sri Lanka rules: promotional vs. transactional SMS

Capability	Promotional / marketing	Transactional / service (OTP, alerts)
Registered sender ID required
Prior consent required		—
Opt-out instruction required		—
Restricted to a permitted sending window		—
Delivery receipts available

FAQ

Common questions

Who regulates SMS in Sri Lanka?

the Telecommunications Regulatory Commission of Sri Lanka (TRCSL). It licenses the operators that terminate A2P traffic and sets the conditions those routes operate under. BroadNet delivers into Sri Lanka over direct connections to Dialog Axiata, Mobitel and Hutch Sri Lanka.

Do I need to register a sender ID for Sri Lanka?

Yes. TRCSL + operator sender ID registration. Sinhala, Tamil, English all supported. Allow 5-10 business days for approval. An unregistered sender ID is the most common cause of silently filtered traffic, so register before the campaign rather than during it.

How long does it take to start sending to Sri Lanka?

Live in 5–15 business days from test-access request to production. The sender-ID registration is usually the long pole at 5-10 business days; the technical integration itself is the same REST or SMPP interface you would use for any other market.

Is there a permitted window for promotional SMS in Sri Lanka?

Yes. TRCSL's promotional-messages guidelines bar promotional messages from 8.00 p.m. to 8.00 a.m. Transactional messages such as one-time passcodes are treated separately from marketing, but the category is judged on the content of the message, not on how the campaign was labelled.

What does A2P SMS cost in Sri Lanka?

Indicative list pricing is USD 0.025 – 0.045 per message, with volume tiers below that. The rate depends on the operator, the message category and committed volume — see the Sri Lanka coverage page for the per-operator breakdown.

What delivery rate should I expect in Sri Lanka?

BroadNet does not publish per-country delivery percentages. Every message on these direct operator routes returns a delivery receipt (DLR), so you can measure delivery on your own traffic, and the platform carries a 99.99% uptime SLA. Grey routes deliver until they do not, and give you no receipt when they fail.

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Sri Lanka coverage

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A2P SMS regulations in Sri Lanka. Compliance with TRCSL rules and sender-ID registration.