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: 370

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-370 A Jennings LA LFYTLA360MD  6664 SPRINT SPECTRUM, L.P. 488      
337-370 0 Jennings LA LFYTLA360MD  6664 SPRINT SPECTRUM, L.P. 488      
337-370 1 Jennings LA LKCHLA181MD  5562 METROPCS, INC. 488      
337-370 2 Jennings LA LKCHLA181MD  5562 METROPCS, INC. 488      
337-370 3 Jennings LA LKCHLA181MD  5562 METROPCS, INC. 488      
337-370 6 Jennings LA LKCHLA181MD  5562 METROPCS, INC. 488      
337-370 9 Jennings LA   5562 METROPCS, INC. 488      

Last updated: Wed, 07 Feb 2024 04:12:25 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.