Meaning NXX
What does NXX mean? Here you find 5 meanings of the word NXX. You can also add a definition of NXX yourself
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NXX(Exchange)
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NXXThe three digit switch entity indicator which is defined by the "D", "E", and "F" digits of a 10-digit telephone number within the North American [..]
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NXXThe first three characters of a seven digit telephone number.
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NXX Term used typically to represent the 4th-6th digits of the ten-digit telphone number (N = any digit 2-9, X = any digit 0-9).
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NXXNXX is a three-digit prefix that identifies a local exchange or CO. "N" represents any digit except 0 or 1, and "X" represents any digit from 0 to 9. The prefix was formerly called an "NNX."
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