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: 476

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-476 A Sulphur LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-476 0 Sulphur LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-476 1 Sulphur LA LKCHLADTSMD  153F BANDWIDTH.COM CLEC, LLC - LA 488      
337-476 2 Sulphur LA LFYTLAMAX5X  3232 LEVEL 3 COMMUNICATIONS, LLC - LA 488      
337-476 3 Sulphur LA LFYTLA180MD  8764 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 488      
337-476 4 Sulphur LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-476 5 Sulphur LA LFYTLAATX7X  516C AT&T CORP. 488      
337-476 6 Sulphur LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-476 7 Sulphur LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-476 8 Sulphur LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-476 9 Sulphur LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.