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: ALBQNMMAX8Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
505-531 A Santa Fe NM 732J NUSO, LLC 664      
505-531 1 Santa Fe NM 732J NUSO, LLC 664   2022-12-08   
505-602 4 Santa Fe NM 732J NUSO, LLC 664   2024-04-11   
505-602 5 Santa Fe NM 732J NUSO, LLC 664   2024-04-11   
505-628 3 Santa Fe NM 732J NUSO, LLC 664   2024-08-22   
505-628 4 Santa Fe NM 732J NUSO, LLC 664   2024-08-22   
505-628 5 Santa Fe NM 732J NUSO, LLC 664   2024-08-22   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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