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  1. Feb 28, 2024 · 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.

  2. 3. Include the first three digits of the local number (prefix), which identifies a smaller region within the area code. 4. Add the last four digits of the local number, unique to each individual phone line within a specific prefix. Format the complete phone number as: 1 XXX XXX XXXX, where each “X” represents a digit.

  3. Mar 12, 2024 · Here’s a United States phone number example, (702)-234-5566. Here, 702 is the area code, and 234-5566 is the seven local phone number. To call an american phone number from abroad, you’ll need to use the international code for the US, which is 1. Exit code – US country code (1) – area code – 7-digit phone number.

    • 205, 251, 256, 334, 938
    • 229, 404, 470, 478, 678, 706, 762, 770, 912
    • 479, 501, 870
  4. Apr 8, 2024 · A. Format and structure. 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.

  5. 1- (555)-123-4567. The 1+ area code format helps the phone system recognise that the call is long distance and should be routed between exchanges. Some long distance US phone number examples: 1- (212)-555-1212 – Long distance call from California. 1- (404)-123-4567 – Long distance call from New York.

    • 205, 251, 256, 334
    • 480, 520, 602, 623, 928
    • 907
    • Area Codes
  6. 011 + 1 + Area code + Local number. The 011 tells the phone system this is an international call. The 1 is the country code for the United States. After dialing 011 and 1, you then add the US area code and local number. So for example, to call 555-123-4567 from abroad, you would dial: 011-1-555-123-4567.

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  8. The NANP assigns 792 usable prefixes or CO codes to every area code, and 10,000 telephone numbers to every prefix, which means that every area code has 7.92 million phone numbers. As mentioned before, telephone numbers are a finite public resource and these available numbers do eventually become exhausted – typically in a few decades in areas ...