Sign in Subscribe

msisdn mobile number

Last updated on 


The term "MSISDN" stands for "Mobile Station International Subscriber Directory Number." In simpler terms, MSISDN is the technical term for a mobile phone number. Let's break down its structure and components.

MSISDN Components:

  1. Country Code (CC): This is the first part of the MSISDN and represents the international dialing code of the country. For instance:
    • USA: +1
    • UK: +44
    • India: +91
      ... and so on.
  2. National Destination Code (NDC): Following the country code, there's typically a national destination code that identifies a specific geographic area within the country, such as a city or region.
  3. Subscriber Number (SN): This is the unique number assigned to the subscriber within the specific area or network. It's the actual "phone number" that identifies the individual mobile device.

Format:

The MSISDN, when fully represented, might look something like this:

��CC���NDC��SN

For instance, an MSISDN for a mobile phone in the UK might look like: +44XXXXXXXXXX, where:

  • +44 is the country code for the UK.
  • XXXX could be the NDC.
  • XXXXXX would represent the subscriber number.

Key Points:

  1. Uniqueness: Each MSISDN is unique and identifies a specific mobile device or subscriber within the network. It's essential for routing calls and messages to the correct device.
  2. Portability: With mobile number portability, subscribers can switch between different service providers but retain their MSISDN. The underlying technical mechanisms ensure that calls and messages still reach the subscriber, irrespective of the service provider.
  3. Interconnection: MSISDN plays a crucial role in interconnecting different telecommunications networks worldwide. When you make a call or send a message across networks, the MSISDN helps in routing the communication correctly.
  4. Length and Variations: While the format described above is a general representation, the actual structure and length of an MSISDN might vary based on the country's numbering plan and specific regulations.

Conclusion:

MSISDN is a standardized numbering system for mobile devices, ensuring that calls, messages, and other services are routed correctly across various telecommunications networks globally. Its structure combines a country code, a national destination code, and a subscriber number to uniquely identify and address mobile subscribers.