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: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

NXX: 413

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-413 A Spring TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-413 0 Spring TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-413 1 Spring TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-413 2 Spring TX HSTATX757MD  7982 CAPROCK TELECOMMUNICATIONS CORP. - TX 560      
346-413 3 Spring TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-413 4 Spring TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-413 5 Spring TX HSTNTXGI1MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-413 6 Spring TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-413 7 Spring TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-413 8 Spring TX HSTNTXJAX3Y  073H TELNYX LLC 560      
346-413 9 Spring TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.