US phone number format

The standard US telephone number is a 10-digit number, such as (555) 555-1234, where the first three digits are the "area code".

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Regex expressions	Description	Score
`\b[2-9][0-9]{2} [2-9][0-9]{2} [0-9]{4}\b`	Matches a 10-digit number of the format NNN NNN NNNN delimited by space, where the first two groups cannot be 000-199.	1
`\b[2-9][0-9]{2}-[2-9][0-9]{2}-[0-9]{4}\b`	Matches a 10-digit number of the format NNN NNN NNNN delimited by hyphen, where the first two groups cannot be 000-199.	1
`\([2-9][0-9]{2}\) [2-9][0-9]{2} [0-9]{4}\b`	Matches a 10-digit number of the format (NNN) NNN NNNN delimited by space, where the first two groups cannot be 000-199.	1
`\([2-9][0-9]{2}\)[2-9][0-9]{6}\b`	Matches a 10-digit number of the format (NNN) NNNNNNN delimited by space, where the first two groups cannot be 000-199.	1
`\([2-9][0-9]{2}\) ?[2-9][0-9]{2}-[0-9]{4}\b`	Matches a 10-digit number of the format (NNN) NNN-NNNN delimited by hyphen, where the first two groups cannot be 000-199.	1

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