Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.


NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
505-905 A Gallup NM YTHYNMABDS1  664   2007-12-01   
505-908 2 Albuquerque NM   664   2007-11-15   
505-960 A Farmington NM BLFDNMBJDS0  664   2007-12-01   
505-972 A Grants NM YTHYNMABDS1  664   2007-12-01   

Last updated: Sat, 29 Jun 2019 02:32:58 UTC

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