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: 483

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-483 A Springer NM SPRNNMMARS1  9636 QWEST CORPORATION 664      
575-483 0 Springer NM   9636 QWEST CORPORATION 664      
575-483 1 Springer NM   206F ONVOY, LLC - NM 664   2013-12-22   
575-483 2 Springer NM   9636 QWEST CORPORATION 664      
575-483 3 Springer NM   9636 QWEST CORPORATION 664      
575-483 5 Springer NM   9636 QWEST CORPORATION 664      
575-483 6 Springer NM   5470 LEVEL 3 COMMUNICATIONS, LLC - NM 664   2006-09-04   
575-483 7 Springer NM   206F ONVOY, LLC - NM 664   2007-05-04   
575-483 8 Springer NM   206F ONVOY, LLC - NM 664   2011-10-30   
575-483 9 Springer NM   206F ONVOY, LLC - NM 664   2013-12-22   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.