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A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. [1] Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering plans are defined in each of ...
E.164 is an international standard ( ITU-T Recommendation), titled The international public telecommunication numbering plan, that defines a numbering plan for the worldwide public switched telephone network (PSTN) and some other data networks . E.164 defines a general format for international telephone numbers.
- June 2020
- 1984
- In force
- ITU-T
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What is the North American numbering plan?
What is a telephone numbering plan?
What is a global telephone numbering plan?
How do countries change their numbering plans?
American Numbering Plan. The United States of America, Canada, and several Caribbean countries have a uniform integrated numbering plan behind the single -digit country code +1. This con stitutes the only major world region which seems unlikely to move towards conformity with ITU recommendations. Other examples of numbering integration can be ...
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. Some North American countries, most notably Mexico, do not participate with the NANP.
- 1
- 011
- +1 NXX NXX-XXXX
Feb 19, 2024 · Global Telephone Number Formatting. The formatting of telephone numbers varies significantly across the globe. The standard 10-digit format (3+3+4 grouping) prevails in the US and Canada, while other countries might use different lengths and groupings. The differences in telephone number formatting across countries can be significant.
- Luke Genoyer
Dec 28, 2020 · Users simply dial the country dialing code, followed by the NPA area code, and a 7-digit local number. For example, when calling from the US to Barbados, users will dial +1 (246) xxx-xxxx. Even though all numbers within the NANP share the same numbering plan and resources, calls made between NANP countries are not considered domestic calls.
phones and electronic numbering (ENUM), ITU-T develops telecommunication numbering and addressing standards to ensure that we can stay in touch on any device, anywhere. Resources managed by ITU-T include those defined in ITU-T Recommendations: ITU-T E.164 (Tel. numbering plan) ITU-T M.1400 (Interconnection among operators)
