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: 575 [Rate centres in NPA 575] [Dial plan for NPA 575]

NXX: 600

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-600 A Lybrook NM ALBQNMMAX4Y  206F ONVOY, LLC - NM 664      
575-600 2 Lybrook NM ALBQNMMAX4Y  206F ONVOY, LLC - NM 664   2020-10-19   
575-600 3 Lybrook NM ALBQNMMAX4Y  206F ONVOY, LLC - NM 664   2020-10-19   
575-600 4 Lybrook NM ALBQNMMAX4Y  206F ONVOY, LLC - NM 664   2020-01-10   
575-600 5 Lybrook NM ALBQNMMAX4Y  206F ONVOY, LLC - NM 664   2019-10-31   
575-600 6 Lybrook NM ALBQNMMAX4Y  206F ONVOY, LLC - NM 664   2018-06-13   
575-600 7 Lybrook NM ALBQNMMAXLX  5470 LEVEL 3 COMMUNICATIONS, LLC - NM 664   2018-06-14   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.