Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: DNVRCOMA39Z

<< 1 2 3 4 5 6 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
303-993 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-07-16   
303-993 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-07-16   
303-993 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-07-16   
303-997 A Denver CO 318J COMCAST IP PHONE, LLC 656      
303-997 4 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-03-17   
303-997 5 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-03-17   
303-997 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-03-17   
303-997 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-03-17   
303-997 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-03-17   
303-997 9 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-03-17   
303-999 A Denver CO 318J COMCAST IP PHONE, LLC 656      
303-999 0 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-10-30   
720-204 6 Longmont CO 318J COMCAST IP PHONE, LLC 656   2011-01-18   
720-216 0 Denver CO 318J COMCAST IP PHONE, LLC 656      
720-216 1 Denver CO 318J COMCAST IP PHONE, LLC 656      
720-216 5 Denver CO 318J COMCAST IP PHONE, LLC 656      
720-242 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-01-28   
720-242 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-01-28   
720-242 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-01-28   
720-242 9 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-01-28   
720-255 2 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-03-17   
720-258 3 Denver CO 318J COMCAST IP PHONE, LLC 656      
720-269 4 Denver CO 318J COMCAST IP PHONE, LLC 656      
720-277 3 Denver CO 318J COMCAST IP PHONE, LLC 656   2002-12-16   
720-282 3 Denver CO 318J COMCAST IP PHONE, LLC 656   2002-12-16   
720-287 A Denver CO 318J COMCAST IP PHONE, LLC 656      
720-287 0 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-06-14   
720-287 1 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-06-14   
720-287 2 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-06-14   
720-287 3 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-06-14   
720-287 4 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-06-14   
720-324 A Denver CO 318J COMCAST IP PHONE, LLC 656      
720-324 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2007-03-09   
720-328 A Denver CO 318J COMCAST IP PHONE, LLC 656      
720-328 0 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-12-04   
720-328 1 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-12-04   
720-328 2 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-12-04   
720-328 3 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-12-04   
720-328 4 Denver CO 318J COMCAST IP PHONE, LLC 656   2009-12-04   
720-328 5 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-05-05   
720-328 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-05-05   
720-328 8 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-05-05   
720-328 9 Denver CO 318J COMCAST IP PHONE, LLC 656   2010-05-05   
720-335 6 Denver CO 318J COMCAST IP PHONE, LLC 656   2008-03-03   
720-340 4 Longmont CO 318J COMCAST IP PHONE, LLC 656   2010-04-01   
720-350 4 Denver CO 318J COMCAST IP PHONE, LLC 656   2008-03-03   
720-353 4 Denver CO 318J COMCAST IP PHONE, LLC 656   2008-03-03   
720-361 2 Denver CO 318J COMCAST IP PHONE, LLC 656   2013-09-13   
720-372 7 Denver CO 318J COMCAST IP PHONE, LLC 656   2014-02-06   
720-379 3 Denver CO 318J COMCAST IP PHONE, LLC 656   2006-12-29   
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   

<< 1 2 3 4 5 6 >>

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.