Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: DNVRCOMA39Z

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
720-379 4 Denver CO 318J COMCAST IP PHONE, LLC 656   2006-12-29   
720-379 5 Denver CO 318J COMCAST IP PHONE, LLC 656   2006-12-29   
720-379 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2006-12-29   
720-379 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2006-12-29   
720-379 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2006-12-29   
720-381 A Denver CO 318J COMCAST IP PHONE, LLC 656      
720-381 0 Denver CO 318J COMCAST IP PHONE, LLC 656   2005-09-24   
720-381 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2006-12-29   
720-387 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2012-10-29   
720-387 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2012-10-29   
720-389 5 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-04-15   
720-389 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-04-15   
720-389 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-04-15   
720-389 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-04-15   
720-389 9 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-06-18   
720-390 5 Denver CO 318J COMCAST IP PHONE, LLC 656   2013-10-14   
720-390 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2013-10-14   
720-390 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2013-10-14   
720-398 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-09-19   
720-398 9 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-09-19   
720-408 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-01-23   
720-408 9 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-07-07   
720-410 A Denver CO 318J COMCAST IP PHONE, LLC 656      
720-410 2 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-08-11   
720-420 0 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-09-19   
720-420 9 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-09-19   
720-428 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2012-06-28   
720-440 9 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-09-19   
720-456 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2013-09-13   
720-456 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2013-09-13   
720-458 0 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-12-16   
720-459 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2012-06-28   
720-459 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2012-06-28   
720-465 9 Denver CO 318J COMCAST IP PHONE, LLC 656   2012-05-06   
720-466 6 Fort Lupton CO 318J COMCAST IP PHONE, LLC 656   2010-09-09   
720-475 1 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-01-29   
720-476 3 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-07-10   
720-476 4 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-07-10   
720-476 5 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-07-10   
720-476 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-07-10   
720-476 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-07-10   
720-479 8 Denver CO 318J COMCAST IP PHONE, LLC 656      
720-484 4 Denver CO 318J COMCAST IP PHONE, LLC 656   2011-09-16   
720-484 5 Denver CO 318J COMCAST IP PHONE, LLC 656   2011-09-16   
720-484 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2011-09-16   
720-485 A Denver CO 318J COMCAST IP PHONE, LLC 656      
720-485 3 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-06-22   
720-485 4 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-06-22   
720-485 5 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-06-22   
720-486 0 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-10-27   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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