What does NXX stand for? Abbreviation of NXX, definition of NXX, Explanation of NXX, Full forms of short form NXX.
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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
North American Direct Distance Dialing Numbering Plan N Is Any Number From 2 To 9 And X Is Any Number From 0 To 9 is abbreviated as NXX
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