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: 559

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-559 A Sweet Lake LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2024-03-01   
337-559 0 Sweet Lake LA LKCHLADTSMD  153F BANDWIDTH.COM CLEC, LLC - LA 488      
337-559 1 Sweet Lake LA LFYTLAMAX7Z  624H ONVOY SPECTRUM, LLC 488      
337-559 8 Sweet Lake LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 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.