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: DNVRCOMD4MD

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
720-633 0 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-02-25   
720-633 1 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-02-25   
720-633 2 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-02-25   
720-635 A Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-639 0 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2014-07-16   
720-639 1 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2014-07-16   
720-643 0 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-10-16   
720-643 6 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-10-16   
720-643 7 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-10-16   
720-643 8 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-10-16   
720-643 9 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-10-16   
720-645 0 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2014-05-06   
720-646 A Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-646 4 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-646 5 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-646 6 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-646 7 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-646 8 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-646 9 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-648 4 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-07-11   
720-648 5 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-07-11   
720-648 6 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-07-11   
720-648 7 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-07-11   
720-648 8 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-07-11   
720-648 9 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-07-11   
720-654 A Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-654 0 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-654 1 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-654 2 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-654 3 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-654 4 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-654 5 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-654 6 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-654 7 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-654 8 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-654 9 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-02-24   
720-656 A Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-656 0 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-656 1 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-656 2 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-656 3 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-656 6 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-11-21   
720-662 0 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-01-19   
720-662 1 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-01-19   
720-662 2 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-01-19   
720-662 3 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-01-19   
720-662 5 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-03-09   
720-662 6 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-03-09   
720-663 4 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-03-22   
720-663 5 Denver CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-03-22   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 >>

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.