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.

Greenbrier, AR

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
501-581 0   1691 WINDSTREAM ARKANSAS, INC. 528      
501-581 1   6805 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 528      
501-581 2   6805 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 528      
501-581 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528      
501-581 4   1691 WINDSTREAM ARKANSAS, INC. 528      
501-581 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2005-03-07   
501-581 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2006-01-13   
501-581 7   6805 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 528   2006-10-12   
501-581 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2006-11-29   
501-581 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2007-10-13   
501-679 A GNBRARXADS0  1691 WINDSTREAM ARKANSAS, INC. 528      
501-714 A GNBRARXA0MD  506J TWILIO INTERNATIONAL, INC. 528   2024-12-27   
501-714 0   506J TWILIO INTERNATIONAL, INC. 528   2024-12-27   

<< 1 2

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.