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: 505 [Rate centres in NPA 505] [Dial plan for NPA 505]

NXX: 597

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
505-597 A Albuquerque NM ALBQNMMAXUY  318J COMCAST IP PHONE, LLC 664      
505-597 0 Albuquerque NM   6529 T-MOBILE USA, INC. 664   2024-01-23   
505-597 1 Albuquerque NM   6529 T-MOBILE USA, INC. 664   2024-01-23   
505-597 2 Albuquerque NM   6529 T-MOBILE USA, INC. 664   2024-01-23   
505-597 3 Albuquerque NM   318J COMCAST IP PHONE, LLC 664   2023-12-21   
505-597 4 Albuquerque NM   318J COMCAST IP PHONE, LLC 664   2023-12-21   
505-597 5 Albuquerque NM   318J COMCAST IP PHONE, LLC 664   2023-12-21   
505-597 6 Albuquerque NM   318J COMCAST IP PHONE, LLC 664   2023-12-21   
505-597 7 Albuquerque NM   318J COMCAST IP PHONE, LLC 664   2023-12-21   
505-597 8 Albuquerque NM   732J NUSO, LLC 664   2023-12-22   
505-597 9 Albuquerque NM   732J NUSO, LLC 664   2023-12-22   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.