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A typical US phone number consists of a total of 10 digits, which include the area code, exchange code, and line number. If you are calling the US from outside, use the following format: your country’s exit code + 1 + area code + local phone number.
Each telephone is assigned a seven-digit telephone number unique only within its respective numbering plan area. The telephone number consists of a three-digit central office (or exchange) code and a four-digit station number.
- 1
- 011
- +1 NXX NXX-XXXX
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How many digits are in a US phone number?
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What is a national telephone number?
What is an area code in a phone number?
The national telephone number consists of a three-digit area code, a three-digit central office code, and a four-digit line number. Thus, each central office provides a resource of 10,000 telephone lines with a unique number each. While often enough for small communities, most cities require multiple central offices to service the community.
Apr 8, 2024 · Traditional landline phone numbers in the US typically consist of 10 digits. These numbers are structured in three parts: the area code, the central office code, and the local exchange code. For example, in the number (123) 456-7890, the area code is 123, the central office code is 456, and the local exchange code is 7890.
Dec 28, 2020 · NANP numbers are ten-digits long. This includes a three-digit Numbering Plan Area (NPA) code — an area code followed by a seven-digit local number or subscriber number. The format is usually represented as: +1 NXX-NXX-XXXX. Which Countries are Included in the NANP? Anguilla: 264. Antigua & Barbuda: 268. Bahamas (the): 242. Barbados: 246.
- What is the North American Numbering Plan?The North American Numbering Plan (NANP) is a telephone numbering plan that serves 20 North American countries and exists to simplify and facilitat...
- What Countries Use the North American Numbering Plan?The NANP mainly covers the US and its territories, Canada, and some Caribbean countries.
- Why do the US and Canada Have the Same Country Code?All North American countries included in the North American Numbering Plan are assigned the country code (+1), including the US and Canada.
- What is a North American Phone Number Example?An example of a North American phone number is +1(469) 123-4567. It uses the format: +1 (area code) xxx-xxxx.
1. Note the US International Exit Code (+1 / 001) 2. Obtain the US Country Code (1) 3. Check the US Area Code. 4. Double-Check the 7-Digit Local Phone Number. 5. Ensure the Correct US Phone Number Format. All US Area Codes. The Current US Phone Number Format. Telephone Area Codes. Local Telephone Exchanges. Separators. Toll-Free Numbering.
A 10-digit dialed telephone call requires entering both the three-digit area code and the seven-digit telephone number to complete the call, even if the area code is the same area code as your own. When an area code transitions to 10-digit dialing, you will no longer be able to dial only seven digits to make a local call.
