Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 337 [Rate centres in NPA 337] [Dial plan for NPA 337]

NXX: 391

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-391 A Iowa LA LKCHLADTXDX  5562 METROPCS, INC. 488      
337-391 0 Iowa LA   153F BANDWIDTH.COM CLEC, LLC - LA 488   2008-12-18   
337-391 1 Iowa LA   150C VOICESTREAM GSM I, LLC 488      
337-391 2 Iowa LA   749E ONVOY, LLC - LA 488   2022-07-30   
337-391 3 Iowa LA   749E ONVOY, LLC - LA 488   2022-07-30   
337-391 4 Iowa LA   260H CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 488   2011-08-08   
337-391 5 Iowa LA   3232 LEVEL 3 COMMUNICATIONS, LLC - LA 488   2021-08-04   
337-391 6 Iowa LA   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2022-03-05   
337-391 7 Iowa LA   508J CENTURYLINK COMMUNICATIONS, LLC 488   2014-09-11   
337-391 8 Iowa LA   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2021-02-26   
337-391 9 Iowa LA   150C VOICESTREAM GSM I, LLC 488      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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