E212

E212 is a standard that is used in telecommunications to define the format of mobile subscriber numbers. It is a numbering plan for the international public telecommunication numbering plan. The E212 numbering plan is used to assign unique numbers to mobile devices, allowing them to be identified and reached by other devices on the network.

The E212 numbering plan is based on the ITU-T E.212 recommendation, which specifies the structure and format of mobile subscriber numbers. The E212 numbering plan is used by mobile network operators around the world to assign numbers to their subscribers. Each mobile subscriber number is unique within the numbering plan and consists of a country code, a national destination code, and a subscriber number.

The country code is a three-digit code that identifies the country where the subscriber is located. The national destination code is a one to three-digit code that identifies the mobile network within the country. The subscriber number is a unique number assigned to each subscriber within the network.

The E212 numbering plan allows mobile devices to be reached from anywhere in the world by dialing the correct country code, national destination code, and subscriber number. This allows for seamless communication between mobile devices on different networks and in different countries.

In addition to defining the format of mobile subscriber numbers, the E212 numbering plan also includes guidelines for the administration and assignment of numbers. Mobile network operators are responsible for managing their allocation of numbers within the E212 numbering plan and ensuring that numbers are assigned in a fair and efficient manner.

Overall, the E212 numbering plan plays a crucial role in enabling global communication through mobile devices. By providing a standardized format for mobile subscriber numbers, the E212 numbering plan ensures that mobile devices can be easily identified and reached on networks around the world. This helps to facilitate seamless communication and connectivity for mobile users, regardless of their location or network provider.