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.

OCN: 588A ZIPPYTECH INCORPORATED

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
720-345 A Denver CO DNVRCOMAGT7  656   2008-02-29   
720-345 0 Denver CO   656   2008-02-29   
970-236 A Aspen CO ASPECOMAGT0  656   2009-08-27   
970-236 0 Aspen CO   656   2009-08-27   
970-236 5 Aspen CO   656   2010-06-20   
970-279 2 Basalt CO   656   2009-12-07   
970-399 0 Delta CO   656   2009-12-13   
970-403 A Durango CO DURNCOMAG00  656      
970-403 0 Durango CO   656   2005-12-11   
970-403 1 Durango CO   656   2007-11-04   
970-403 8 Durango CO   656   2009-12-01   
970-426 4 Durango CO   656   2015-01-10   
970-462 A Grand Junction CO GDJTCOMAGT0  656      
970-462 0 Grand Junction CO   656   2008-06-27   
970-510 3 Carbondale CO   656   2009-12-07   
970-529 5 Cortez CO   656   2007-09-29   
970-529 7 Cortez CO   656   2007-09-29   
970-542 8 Fort Morgan CO   656   2011-04-10   
970-547 6 Breckenridge CO   656   2014-03-27   
970-648 1 Gunnison CO   656   2010-08-14   
970-665 0 Rifle CO   656   2010-04-25   
970-665 1 Rifle CO   656   2010-06-19   
970-729 7 Telluride CO   656   2008-05-09   
970-827 2 Vail CO   656   2012-11-23   
970-888 5 Greeley CO   656   2013-01-08   
970-964 1 Montrose CO   656   2008-12-15   
970-968 5 Dillon CO   656   2014-05-25   
970-989 1 Glenwood Springs CO   656   2010-03-21   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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