Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 435 [Rate centres in NPA 435] [Dial plan for NPA 435]

NXX: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
435-237 A Brigham City UT DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660      
435-237 0 Brigham City UT   3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660   2005-11-13   
435-237 1 Brigham City UT   6529 T-MOBILE USA, INC. 660      
435-237 2 Brigham City UT   6529 T-MOBILE USA, INC. 660   2009-03-09   
435-237 3 Brigham City UT   6529 T-MOBILE USA, INC. 660   2004-04-27   
435-237 4 Brigham City UT   6529 T-MOBILE USA, INC. 660   2011-06-17   
435-237 5 Brigham City UT   6529 T-MOBILE USA, INC. 660   2011-07-14   
435-237 6 Brigham City UT   6529 T-MOBILE USA, INC. 660   2011-07-14   
435-237 7 Brigham City UT   6529 T-MOBILE USA, INC. 660   2007-11-03   
435-237 8 Brigham City UT   6529 T-MOBILE USA, INC. 660   2011-07-14   
435-237 9 Brigham City UT   6529 T-MOBILE USA, INC. 660      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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