Local Calling Guide

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NPA: 435 [Rate centres in NPA 435] [Dial plan for NPA 435]

NXX: 553

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
435-553 A Brigham City UT SLKDUTYI3MD  3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660      
435-553 0 Brigham City UT SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2017-09-08   
435-553 1 Brigham City UT DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660   2011-02-11   
435-553 2 Brigham City UT DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660   2011-02-11   
435-553 3 Brigham City UT DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660   2011-02-11   
435-553 4 Brigham City UT SLKDUTYI3MD  3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660      
435-553 5 Brigham City UT SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2007-07-14   
435-553 6 Brigham City UT DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660   2011-02-11   
435-553 7 Brigham City UT DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660   2011-02-11   
435-553 8 Brigham City UT DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660   2011-02-11   
435-553 9 Brigham City UT DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660   2007-03-02   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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