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: 856

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
435-856 A Nephi UT SLKDUTYI3MD  3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660      
435-856 0 Nephi UT   3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660      
435-856 1 Nephi UT   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2009-02-04   
435-856 2 Nephi UT   318J COMCAST IP PHONE, LLC 660   2023-07-02   
435-856 3 Nephi UT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 660   2012-05-01   
435-856 4 Nephi UT   791D CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 660   2022-05-10   
435-856 5 Nephi UT   791D CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 660   2022-05-10   
435-856 6 Nephi UT   7530 TELEPORT COMMUNICATIONS AMERICA, LLC - UT 660   2020-11-09   
435-856 7 Nephi UT   508J CENTURYLINK COMMUNICATIONS, LLC 660   2017-04-05   
435-856 9 Nephi UT   526H PEERLESS NETWORK OF UTAH, LLC - UT 660   2018-09-18   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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