Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-437 A Charlevoix MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-437 0 Charlevoix MI GDRPMIBLXDZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348      
231-437 1 Charlevoix MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-437 2 Charlevoix MI GDRPMIBL15Z  516C AT&T CORP. 348      
231-437 3 Charlevoix MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-437 4 Charlevoix MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-437 5 Charlevoix MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-437 6 Charlevoix MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348      
231-437 7 Charlevoix MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-437 8 Charlevoix MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-437 9 Charlevoix MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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