What does NXX stand for?
What does NXX mean? The list of 1 construals of NXX abbreviation or acronym on the slang term: NXX.
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The List of NXX Acronyms words
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North American Direct Distance Dialing Numbering Plan, 'n' Is Any Number From 2 To 9, And 'x' Is Any Number From 0 To 9