Area Code

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US Phone Number Format
A standard US phone number consists of ten digits, typically formatt as (XXX) XXX-XXXX. Let's break down the components:
The first three digits reprent the area code.
It indicat the geographic region where the phone number is assign.
For example, (212) is the area code for Manhattan, New York City.
Prefix
The next three digits are often referr to as the prefix or exchange code.
It further specifi a particular area within the region cover by the area code.
Line Number
The final four digits are the line number, uniquely nepal calling code identifying a specific phone within the exchange.
Example
A phone number like (555) 555-1212 would be broken down as follows:
Area code: 555
Prefix: 555
Line number: 1212
Dialing Formats
Local Calls: When making a local call within the same area code, you typically dial the seven-digit number (XXX-XXXX).
Long-Distance Calls: For calls to other areas, you dial 1 follow by the area code and the seven-digit number (1-XXX-XXX-XXXX).
International Calls: To call a US number from outside the country, you dial the country code for the US (+1), follow by the ten-digit number (+1-XXX-XXX-XXXX).
Mobile Numbers
US mobile numbers follow the same format as regular phone numbers, with an area code and a seven-digit number. However, there are specific area cod dignat for mobile phon, such as those starting with 3, 4, 5, 6, 7, 8, or 9.
Toll-Free Numbers
Toll-free numbers in the US typically start with 800, 888, 877, 866, 855, 844, or 833. The numbers allow callers to dial a specific number without incurring charg.