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: 990

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-990 A Lake Charles LA LFYTLAMAXLZ  3807 NETWORK TELEPHONE CORPORATION - LA 488      
337-990 0 Lake Charles LA LFYTLAMAXLZ  3807 NETWORK TELEPHONE CORPORATION - LA 488      
337-990 1 Lake Charles LA LKCHLA180MD  150C VOICESTREAM GSM I, LLC 488   2005-11-14   
337-990 2 Lake Charles LA LKCHLA180MD  150C VOICESTREAM GSM I, LLC 488   2005-11-14   
337-990 4 Lake Charles LA LFYTLA180MD  8764 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 488   2011-11-16   
337-990 5 Lake Charles LA LKCHLADTXAX  260H CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 488   2011-12-11   
337-990 6 Lake Charles LA LFYTLAMAX3Y  653C TELEPORT COMMUNICATIONS AMERICA LA - LLC 488   2018-04-19   
337-990 7 Lake Charles LA LKCHLA180MD  150C VOICESTREAM GSM I, LLC 488   2022-01-20   
337-990 8 Lake Charles LA LFYTLAMAX5X  3232 LEVEL 3 COMMUNICATIONS, LLC - LA 488   2004-11-26   
337-990 9 Lake Charles LA LFYTLAMAXLZ  3807 NETWORK TELEPHONE CORPORATION - LA 488      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.