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.

Switch: ALBQNM10X4X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
505-418 A Albuquerque NM 321J HD CARRIER LLC 664      
505-418 9 Albuquerque NM 321J HD CARRIER LLC 664   2021-05-01   
505-656 3 Albuquerque NM 321J HD CARRIER LLC 664   2026-06-04   
505-656 4 Albuquerque NM 321J HD CARRIER LLC 664   2026-06-04   
505-656 6 Albuquerque NM 321J HD CARRIER LLC 664   2026-06-04   
505-656 7 Albuquerque NM 321J HD CARRIER LLC 664   2026-06-04   
575-438 3 Las Cruces NM 321J HD CARRIER LLC 664   2026-07-02   
575-438 7 Las Cruces NM 321J HD CARRIER LLC 664   2026-07-02   
575-438 8 Las Cruces NM 321J HD CARRIER LLC 664   2026-07-02   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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