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: 355

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-355 A Franklin LA LFYTLACLH03  8839 ADVANCED TEL., INC. - LA 488      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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