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: 337 [Rate centres in NPA 337] [Dial plan for NPA 337]

NXX: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-578 A Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-578 0 Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-578 1 Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-578 2 Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-578 3 Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-578 4 Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-578 5 Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2004-02-16   
337-578 6 Baldwin LA LFYTLAMAXEZ  318J COMCAST IP PHONE, LLC 488   2004-08-10   
337-578 7 Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-578 8 Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2005-01-21   
337-578 9 Baldwin LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2005-01-21   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.