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The International Telecommunication Union (ITU) has established a comprehensive numbering plan, designated E.164, for uniform interoperability of the networks of its member state or regional administrations. It is an open numbering plan, however, imposing a maximum length of 15 digits to telephone numbers.
- Telephone numbering plan - Simple English Wikipedia, the free encyclopedia
A telephone numbering plan is a system used in...
- Telephone numbering plan - Simple English Wikipedia, the free encyclopedia
In telecommunication, a dial plan (or dialing plan) establishes the permitted sequences of digits dialed by telephone subscriber and the manner in which a telephone switch interprets these digits within the definitions of the prevailing telephone numbering plan. [1]
Many countries outside the NANP have open numbering plans in which the size of telephone numbers or area codes can be expanded as needed in each locality. In the North American Numbering Plan incremental changes were avoided, and delayed until the entire numbering plan requires expansion.
The North American Numbering Plan (NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1 .
- 1
- 011
- +1 NXX NXX-XXXX
19 feb 2024 · Luke Genoyer 19th February 2024. Telephone numbers typically get assigned according to national telephone numbering plans, such as the North American Numbering Plan (NANP) for the United States and Canada. These plans can be “open” or “closed,” significantly impacting the structure and accessibility of phone numbers within ...
Hong Kong’s return to China without change to its numbering plan. In the early 1990s, much effort was devoted to exploring the prospects for an integrated European numbering plan, on the NANP model. This was finally abandoned on grounds of excessive cost. In its place is the +3883 European Telephony Numbering Space.
