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: 917

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-917 A Erath LA LFYTLAMAXRZ  829J PAETEC ITEL, LLC 488   2024-12-11   
337-917 5 Erath LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2024-06-08   
337-917 6 Erath LA LFYTLAMAXRZ  829J PAETEC ITEL, LLC 488      
337-917 7 Erath LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2021-04-05   
337-917 8 Erath LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2021-04-05   
337-917 9 Erath LA LFYTLAMAXRZ  829J PAETEC ITEL, LLC 488      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.