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: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-556 A Caledonia MN ROCHMNROX0X  980E BANDWIDTH.COM CLEC, LLC - MN 620      
507-556 0 Caledonia MN ROCHMNRO9MD  719F MCC TELEPHONY OF MINNESOTA, LLC - MN 620      
507-556 1 Caledonia MN ROCHMNROX0X  980E BANDWIDTH.COM CLEC, LLC - MN 620      
507-556 2 Caledonia MN ROCHMNROTMD  5256 LEVEL 3 COMMUNICATIONS, LLC - MN 620      
507-556 3 Caledonia MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-556 4 Caledonia MN ROCHMNROX0X  980E BANDWIDTH.COM CLEC, LLC - MN 620      
507-556 7 Caledonia MN ROCHMNROX0X  980E BANDWIDTH.COM CLEC, LLC - MN 620      
507-556 8 Caledonia MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-556 9 Caledonia MN ROCHMNROXQX  624H ONVOY SPECTRUM, LLC 620      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.