Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 334 [Rate centres in NPA 334] [Dial plan for NPA 334]

NXX: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
334-420 A Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 0 Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 1 Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 2 Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 3 Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 4 Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 5 Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 6 Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 7 Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 8 Montgomery AL MTGMALMTX9Z  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 478      
334-420 9 Montgomery AL   072F BANDWIDTH.COM CLEC, LLC - AL 478   2026-09-06   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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