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North american numbering plan expansion

proposals to provide for more telephone numbers

Pronunciation
/nɔrθ əˈmɛrəkən ˈnʌmbərɪŋ plæn ɪkˈspænʃən/
/nɔːθ əˈmɛrɪkən ˈnʌmbəiŋ plan ɪkˈspanʃən/