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: 334 [Rate centres in NPA 334] [Dial plan for NPA 334]

NXX: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
334-403 A Troy AL MTGMALIR7MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 478      
334-403 0 Troy AL   6744 SOUTHERN COMMUNICATIONS SERVICES, INC. 478      
334-403 1 Troy AL   5562 METROPCS, INC. 478   2016-05-06   
334-403 2 Troy AL   6804 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 478   2008-12-14   
334-403 3 Troy AL   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 478   2010-04-21   
334-403 4 Troy AL   5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478   2004-06-13   
334-403 5 Troy AL   072F BANDWIDTH.COM CLEC, LLC - AL 478   2010-11-04   
334-403 6 Troy AL   604E ONVOY, LLC - AL 478   2024-03-08   
334-403 7 Troy AL   604E ONVOY, LLC - AL 478   2008-09-04   
334-403 8 Troy AL   604E ONVOY, LLC - AL 478   2008-09-04   
334-403 9 Troy AL   072F BANDWIDTH.COM CLEC, LLC - AL 478   2021-12-17   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.