Local Calling Guide

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NPA: 303 [Rate centres in NPA 303] [Dial plan for NPA 303]

NXX: 500

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
303-500 A Hudson CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-500 0 Hudson CO   026D ONVOY, LLC - CO 656   2006-01-29   
303-500 1 Hudson CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2012-06-30   
303-500 2 Hudson CO   5562 METROPCS, INC. 656   2005-06-04   
303-500 3 Hudson CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-05-30   
303-500 4 Hudson CO   5562 METROPCS, INC. 656   2005-06-04   
303-500 5 Hudson CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2006-01-04   
303-500 6 Hudson CO   026D ONVOY, LLC - CO 656   2006-01-29   
303-500 7 Hudson CO   026D ONVOY, LLC - CO 656   2007-04-09   
303-500 8 Hudson CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2006-07-15   
303-500 9 Hudson CO   5562 METROPCS, INC. 656   2006-07-24   

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

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