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: 582

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-582 A Iowa LA IOWALAXADS1  0434 BRIGHTSPEED OF LOUISIANA, LLC 488      

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

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