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: 481

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-481 A Starks LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2024-01-06   
337-481 0 Starks LA LFYTLAMAX7Z  624H ONVOY SPECTRUM, LLC 488   2023-07-29   
337-481 4 Starks LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2021-03-08   
337-481 7 Starks LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2019-10-05   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.