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title: India - Laws and Regulations
description: SMS Global Knowledgebase
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# India - Laws and Regulations

## Laws and regulations for SMS in India

**Mobile country code (MCC)**

- 405, 404

**International dialling prefix:**

- 91

**Major carriers:**

- Airtel
- Vodafone India
- Idea Cellular
- Reliance Jio
- BSNL
- Aircel
- Reliance Communication

**SMSGlobal supported:**

- Long Code - Yes
- Short Code - No
- Sender ID - 6 Character Alpha. Preregistration is required.

**One-way communication -** Yes

 

**Two-way communication -** Yes (long code needs to be included in message content as the Sender ID will be an Alpha Sender ID).

 

**Opt-in requirements:**

- Subscribers must opt-in to receive messages.
- Opt-in is valid for only 6 months and then needs to be opted in again.

**Opt out requirements:**

- STOP keyword must be included for customers to opt**-**out of receiving messages.

 

**Message content:**

- Sender IDs for international numbers will be replaced with XX-NNNNNN (2 letters followed by 6 numbers).
- Sender IDs can only be registered for transactional messages, not for promotional messages.

- More than 6 messages with the same Sender ID or content sent to the same number within an hour may be blocked.
- Users may not be able to receive more than a total of 200 SMS messages per day across all incoming streams.

- Messages towards Jammu or Kashmir networks (example, 405/55) will be blocked by the government due to political sensitivity.
- Marketing messages sent between 9:00 pm and 9:00 am India time are not allowed and may be blocked. To bypass this, you can register a 6 character Sender ID.

**Message format supported:**

- Unicode - Yes
- Concatenated messages - Yes

**Delivery receipts (DLR) supported -** Yes

**Useful regulatory links:**

- Telecom Regulatory Authority (TRAI) - [www.trai.gov.in](http://www.trai.gov.in/)

 

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