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: 528

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-528 A Claremont MN CLMTMNXARS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-528 1 Claremont MN CLMTMNXARS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-528 2 Claremont MN CLMTMNXARS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-528 3 Claremont MN CLMTMNXARS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-528 4 Claremont MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-528 5 Claremont MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-528 6 Claremont MN OWTNMNGG0MD  429A MIDCONTINENT COMMUNICATIONS - MN 620      
507-528 7 Claremont MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-528 8 Claremont MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-528 9 Claremont MN CLMTMNXARS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.