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.

Georgetown, CO

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
303-569 A GRTWCOMARS1  9636 QWEST CORPORATION 656      
303-569 0   9636 QWEST CORPORATION 656      
303-569 1   9636 QWEST CORPORATION 656      
303-569 2   9636 QWEST CORPORATION 656      
303-569 3   9636 QWEST CORPORATION 656      
303-569 4   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2011-03-29   
303-569 5   318J COMCAST IP PHONE, LLC 656   2006-07-27   
303-569 6   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2004-11-11   
303-569 7   026D ONVOY, LLC - CO 656   2006-01-29   
303-569 8   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2006-05-20   
303-569 9   026D ONVOY, LLC - CO 656   2006-12-03   
303-900 A DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
303-900 0   078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-02-19   
303-900 1   026D ONVOY, LLC - CO 656   2007-03-06   
303-900 2   078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
303-900 3   078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-04-15   
303-900 4   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2007-03-03   
303-900 5   078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-05-24   
303-900 6   026D ONVOY, LLC - CO 656   2023-09-29   
303-900 7   078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-06-12   
303-900 8   078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-08-13   
303-900 9   026D ONVOY, LLC - CO 656   2009-12-17   
720-386 A DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-386 0   078F BANDWIDTH.COM CLEC, LLC - CO 656   2013-02-02   
720-386 1   078F BANDWIDTH.COM CLEC, LLC - CO 656   2013-02-02   
720-386 2   078F BANDWIDTH.COM CLEC, LLC - CO 656   2013-02-02   
720-386 3   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2014-03-08   
720-386 4   026D ONVOY, LLC - CO 656   2013-04-13   
720-386 5   078F BANDWIDTH.COM CLEC, LLC - CO 656   2013-08-26   
720-386 6   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-26   
720-386 7   026D ONVOY, LLC - CO 656   2013-02-15   
720-386 8   026D ONVOY, LLC - CO 656   2013-02-15   
720-386 9   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-26   
720-608 A DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-608 0   078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-09-17   
720-608 1   078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-11-15   
720-608 2   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2010-11-22   
720-608 3   078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-01-10   
720-608 4   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2011-06-05   
720-608 5   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2012-02-03   
720-608 6   078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-06-19   
720-608 7   078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-08-28   
720-608 8   078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-04-29   
720-608 9   078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-04-14   
720-619 A DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-619 0   078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-05-19   
720-619 1   078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-05-19   
720-619 2   026D ONVOY, LLC - CO 656   2014-10-15   
720-619 3   026D ONVOY, LLC - CO 656   2014-10-15   
720-619 4   026D ONVOY, LLC - CO 656   2014-12-23   
720-619 5   026D ONVOY, LLC - CO 656   2014-12-23   
720-619 6   026D ONVOY, LLC - CO 656   2016-03-23   
720-619 7   508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-05-23   
720-619 8   026D ONVOY, LLC - CO 656   2016-03-23   
720-619 9   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2014-11-15   
720-649 A DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-649 0   078F BANDWIDTH.COM CLEC, LLC - CO 656   2018-11-01   
720-649 1   078F BANDWIDTH.COM CLEC, LLC - CO 656   2018-11-02   
720-649 2   5562 METROPCS, INC. 656   2018-11-02   
720-649 3   078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-05   
720-649 4   026D ONVOY, LLC - CO 656   2019-06-25   
720-649 5   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2019-05-12   
720-649 6   026D ONVOY, LLC - CO 656   2019-06-25   
720-649 7   5562 METROPCS, INC. 656   2018-11-02   
720-649 8   026D ONVOY, LLC - CO 656   2018-12-30   
720-649 9   026D ONVOY, LLC - CO 656   2018-12-30   
720-679 A DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-679 0   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2020-03-12   
720-679 1   026D ONVOY, LLC - CO 656   2020-08-08   
720-679 2   026D ONVOY, LLC - CO 656   2019-12-12   
720-679 3   078F BANDWIDTH.COM CLEC, LLC - CO 656   2020-08-08   
720-679 4   078F BANDWIDTH.COM CLEC, LLC - CO 656   2020-08-08   
720-679 5   026D ONVOY, LLC - CO 656   2020-04-24   
720-679 6   026D ONVOY, LLC - CO 656   2019-12-12   
720-679 7   026D ONVOY, LLC - CO 656   2019-10-14   
720-679 8   026D ONVOY, LLC - CO 656   2020-04-24   
720-679 9   078F BANDWIDTH.COM CLEC, LLC - CO 656   2020-08-08   
720-741 A DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-741 0   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2020-10-25   
720-741 1   026D ONVOY, LLC - CO 656   2020-11-14   
720-741 2   026D ONVOY, LLC - CO 656   2020-11-14   
720-741 3   026D ONVOY, LLC - CO 656   2020-10-10   
720-741 4   026D ONVOY, LLC - CO 656   2020-10-10   
720-741 5   026D ONVOY, LLC - CO 656   2020-10-10   
720-741 6   026D ONVOY, LLC - CO 656   2020-10-10   
720-741 7   026D ONVOY, LLC - CO 656   2020-10-10   
720-741 8   026D ONVOY, LLC - CO 656   2020-11-14   
720-784 A DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-784 0   073H TELNYX LLC 656   2021-03-06   
720-784 1   5562 METROPCS, INC. 656   2021-11-06   
720-784 2   624H ONVOY SPECTRUM, LLC 656   2021-07-19   
720-784 3   026D ONVOY, LLC - CO 656   2021-06-06   
720-784 4   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2021-03-06   
720-784 5   026D ONVOY, LLC - CO 656   2021-10-01   
720-784 6   026D ONVOY, LLC - CO 656   2021-03-05   
720-784 7   026D ONVOY, LLC - CO 656   2021-03-05   
720-784 8   026D ONVOY, LLC - CO 656   2021-03-05   
720-784 9   624H ONVOY SPECTRUM, LLC 656   2021-11-07   
720-791 A DNVRCO26XIX  073H TELNYX LLC 656      
720-791 0   073H TELNYX LLC 656   2017-04-30   

1 2 >>

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.