Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 816 [Rate centres in NPA 816] [Dial plan for NPA 816]

NXX: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
816-503 A Kansas City MO KSCYMO48DS0  9533 SOUTHWESTERN BELL 524      
816-503 0 Kansas City MO   9533 SOUTHWESTERN BELL 524      
816-503 1 Kansas City MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 524   2006-10-25   
816-503 2 Kansas City MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 524   2007-01-19   
816-503 3 Kansas City MO   9533 SOUTHWESTERN BELL 524      
816-503 4 Kansas City MO   9533 SOUTHWESTERN BELL 524      
816-503 5 Kansas City MO   9533 SOUTHWESTERN BELL 524      
816-503 6 Kansas City MO   516C AT&T CORP. 524   2009-12-21   
816-503 7 Kansas City MO   9533 SOUTHWESTERN BELL 524      
816-503 8 Kansas City MO   318J COMCAST IP PHONE, LLC 524   2007-09-07   
816-503 9 Kansas City MO   318J COMCAST IP PHONE, LLC 524   2007-09-07   

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

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