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.

NPA: 720 [Rate centres in NPA 720] [Dial plan for NPA 720]

<< 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 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-453 9 Longmont CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2016-08-13   
720-454 A Denver CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
720-454 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-10-13   
720-454 1 Denver CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656   2010-10-09   
720-454 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-10-13   
720-454 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-10-13   
720-454 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-11-11   
720-454 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-11-11   
720-454 6 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-11-11   
720-454 7 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2010-10-16   
720-454 8 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2010-10-16   
720-454 9 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2010-10-16   
720-455 A Denver CO CSRKCONMDS0  9636 QWEST CORPORATION 656      
720-455 0 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-455 1 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-455 2 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-455 3 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-455 4 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-455 5 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-455 6 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-455 7 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-455 8 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-455 9 Denver CO   9636 QWEST CORPORATION 656   2010-08-28   
720-456 A Denver CO AURSCOFWDS0  4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
720-456 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-09-23   
720-456 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-09-23   
720-456 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-09-23   
720-456 3 Denver CO AURSCOFWDS0  4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2013-09-06   
720-456 4 Denver CO AURSCOFWDS0  4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2013-09-06   
720-456 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-09-23   
720-456 6 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-09-13   
720-456 7 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-09-13   
720-456 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-09-09   
720-456 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-09-09   
720-457 A Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-457 0 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-08-05   
720-457 1 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-08-05   
720-457 2 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-08-05   
720-457 3 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-08-05   
720-457 4 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-08-05   
720-457 5 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-08-05   
720-457 6 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-08-05   
720-457 7 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2008-11-05   
720-457 8 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2008-11-05   
720-457 9 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-08-05   
720-458 A Denver CO AURSCOFWDS0  4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
720-458 0 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2010-12-16   
720-458 1 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2010-12-13   
720-458 2 Denver CO AURSCOFWDS0  4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2010-11-11   
720-458 3 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2010-11-12   
720-458 4 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2010-11-12   
720-458 5 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2010-11-12   
720-458 6 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2010-11-12   
720-458 7 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2010-11-12   
720-458 8 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2010-12-13   
720-458 9 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2010-12-13   
720-459 A Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-459 0 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-09-12   
720-459 1 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-09-12   
720-459 2 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-09-12   
720-459 3 Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2012-05-29   
720-459 4 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2010-12-13   
720-459 5 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2012-06-21   
720-459 6 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2012-06-21   
720-459 7 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2012-06-28   
720-459 8 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2012-06-28   
720-459 9 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2010-12-13   
720-460 A Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656      
720-460 0 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-02-08   
720-460 1 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-02-08   
720-460 2 Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2014-01-11   
720-460 3 Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2014-03-09   
720-460 4 Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2014-03-09   
720-460 5 Denver CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656   2014-01-17   
720-460 6 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-04-04   
720-460 7 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-04-04   
720-460 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-04-04   
720-460 9 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-02-08   
720-461 A Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656      
720-461 0 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-02-12   
720-461 1 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-02-12   
720-461 2 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-03-23   
720-461 3 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-03-23   
720-461 4 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-04-20   
720-461 5 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-04-20   
720-461 6 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-04-20   
720-461 7 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-05-18   
720-461 8 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-05-18   
720-461 9 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2016-02-12   
720-462 A Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-462 0 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2017-01-08   
720-462 1 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2017-01-08   
720-462 2 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2017-01-07   
720-462 3 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2017-01-07   
720-462 4 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2017-01-07   
720-462 5 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2017-01-07   
720-462 6 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2017-01-07   
720-462 7 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2017-01-07   
720-462 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2017-01-08   
720-462 9 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2017-01-08   

<< 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 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.