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: 731

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
505-731 A Torreon NM TRNSNMXCRL0  4450 NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM 664      
505-731 0 Torreon NM TRNSNMXCRL0  4450 NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM 664      
505-731 2 Torreon NM TRNSNMXCRL0  4450 NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM 664      
505-731 8 Torreon NM ALBQNMMAXQX  6010 NEW CINGULAR WIRELESS PCS, LLC 664   2022-09-09   
505-731 9 Torreon NM TRNSNMXCRL0  4450 NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM 664      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.