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: 228

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-228 A Henderson LA HNSNLAXARS1  0434 BRIGHTSPEED OF LOUISIANA, LLC 488      

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

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