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: 947 [Rate centres in NPA 947] [Dial plan for NPA 947]

NXX: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
947-420 A Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340      
947-420 0 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   
947-420 1 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   
947-420 2 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   
947-420 3 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   
947-420 4 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   
947-420 5 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   
947-420 6 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   
947-420 7 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   
947-420 8 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   
947-420 9 Clarkston MI SFLEMIFXCM2  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-07-24   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.