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: 507 [Rate centres in NPA 507] [Dial plan for NPA 507]

NXX: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-221 A Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 0 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 1 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 2 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 3 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 4 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 5 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 6 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 7 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 8 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      
507-221 9 Windom MN OWTNMNOWVMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 620      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.