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: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-556 A Church Point LA LKCHLADTSMD  153F BANDWIDTH.COM CLEC, LLC - LA 488      
337-556 0 Church Point LA LKCHLADTSMD  153F BANDWIDTH.COM CLEC, LLC - LA 488   2021-08-07   
337-556 1 Church Point LA LFYTLAMAX7Z  624H ONVOY SPECTRUM, LLC 488   2023-07-22   
337-556 2 Church Point LA LFYTLA3624Z  490J DISH WIRELESS, LLC 488   2023-12-12   
337-556 3 Church Point LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2022-07-30   
337-556 4 Church Point LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2022-07-30   
337-556 5 Church Point LA LFYULA09DS0  9002 LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 488   2024-11-16   
337-556 6 Church Point LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2025-01-09   
337-556 8 Church Point LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2023-09-09   
337-556 9 Church Point LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2024-07-15   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.