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: 338

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-338 A Welsh LA LKCHLADTXDX  5562 METROPCS, INC. 488      
337-338 1 Welsh LA LFYTLAMAXVY  150C VOICESTREAM GSM I, LLC 488      
337-338 4 Welsh LA LKCHLADTXDX  5562 METROPCS, INC. 488      
337-338 6 Welsh LA LKCHLADTXDX  5562 METROPCS, INC. 488      
337-338 8 Welsh LA   145J TERRA NOVA TELECOM INC. 488   2025-05-22   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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