Local Calling Guide

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NPA: 970 [Rate centres in NPA 970] [Dial plan for NPA 970]

NXX: 387

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-387 A Silverton CO SLTNCOMARS1  9636 QWEST CORPORATION 656      
970-387 0 Silverton CO   9636 QWEST CORPORATION 656      
970-387 1 Silverton CO   9636 QWEST CORPORATION 656      
970-387 2 Silverton CO   026D ONVOY, LLC - CO 656   2012-12-13   
970-387 3 Silverton CO   330B FASTTRACK COMMUNICATIONS, INC. - CO 656   2008-07-05   
970-387 4 Silverton CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2004-11-11   
970-387 5 Silverton CO   9636 QWEST CORPORATION 656      
970-387 6 Silverton CO   026D ONVOY, LLC - CO 656   2007-03-18   
970-387 7 Silverton CO   026D ONVOY, LLC - CO 656   2012-12-13   
970-387 8 Silverton CO   078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
970-387 9 Silverton CO   9636 QWEST CORPORATION 656      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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