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: 528

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-528 A Las Cruces NM LSCRNMMADS0  9636 QWEST CORPORATION 664      
575-528 0 Las Cruces NM   9636 QWEST CORPORATION 664      
575-528 1 Las Cruces NM   9636 QWEST CORPORATION 664      
575-528 2 Las Cruces NM   9636 QWEST CORPORATION 664      
575-528 3 Las Cruces NM   9636 QWEST CORPORATION 664      
575-528 4 Las Cruces NM   9636 QWEST CORPORATION 664      
575-528 5 Las Cruces NM   9636 QWEST CORPORATION 664      
575-528 6 Las Cruces NM   9636 QWEST CORPORATION 664      
575-528 7 Las Cruces NM   9636 QWEST CORPORATION 664      
575-528 8 Las Cruces NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2008-09-18   
575-528 9 Las Cruces NM   6573 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 664   2009-08-07   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.