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
720-237 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-11-30   
720-237 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-11-30   
720-237 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-11-30   
720-237 6 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-11-30   
720-237 7 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-11-30   
720-237 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-11-30   
720-237 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-11-30   
720-238 A Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 0 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 1 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 2 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2005-10-01   
720-238 3 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2005-10-01   
720-238 4 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 5 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2005-10-01   
720-238 6 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 7 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2007-01-11   
720-238 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 9 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-239 A Denver CO DNVRCOMADSS  7421 AT&T - LOCAL 656      
720-239 0 Denver CO DNVRCOMADSS  7421 AT&T - LOCAL 656      
720-239 1 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-10-09   
720-239 2 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
720-239 3 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2007-01-11   
720-239 4 Denver CO DNVRCOMADSS  7421 AT&T - LOCAL 656      
720-239 5 Denver CO DNVRCOMADSS  7421 AT&T - LOCAL 656      
720-239 6 Denver CO DNVRCOMADSS  7421 AT&T - LOCAL 656      
720-239 7 Denver CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2017-08-05   
720-239 8 Denver CO DNVRCOMADSS  7421 AT&T - LOCAL 656      
720-239 9 Denver CO DNVRCOMADSS  7421 AT&T - LOCAL 656      
720-240 A Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-240 0 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-240 1 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2006-03-11   
720-240 2 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-240 3 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2006-03-11   
720-240 4 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-240 5 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-240 6 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2006-03-11   
720-240 7 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2006-03-11   
720-240 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2006-03-11   
720-240 9 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2008-10-09   
720-241 A Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-241 0 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-241 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-03-17   
720-241 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-03-31   
720-241 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-03-31   
720-241 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-04-14   
720-241 5 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-241 6 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-04-14   
720-241 7 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-241 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-04-28   
720-241 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-04-28   
720-242 A Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656      
720-242 0 Denver CO DNVRCO26XYX  598J FIVE9, INC. 656   2023-06-16   
720-242 1 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2023-06-24   
720-242 2 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2023-06-24   
720-242 3 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656   2008-12-15   
720-242 4 Denver CO DNVRCOSEDS0  9636 QWEST CORPORATION 656   2008-12-15   
720-242 5 Denver CO   026D ONVOY, LLC - CO 656   2008-12-18   
720-242 6 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2009-01-28   
720-242 7 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2009-01-28   
720-242 8 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2009-01-28   
720-242 9 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2009-01-28   
720-243 A Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-243 0 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2009-08-28   
720-243 1 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2009-10-16   
720-243 2 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2009-10-16   
720-243 3 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2009-10-16   
720-243 4 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2009-10-16   
720-243 5 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2009-10-16   
720-243 6 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2009-10-16   
720-243 7 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2009-10-16   
720-243 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2009-10-16   
720-243 9 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2009-10-16   
720-244 A Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-245 A Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656      
720-245 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-01-09   
720-245 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-01-09   
720-245 2 Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2012-01-05   
720-245 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-01-09   
720-245 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-02-06   
720-245 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-02-06   
720-245 6 Denver CO AURSCOFWDS0  4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656   2012-01-06   
720-245 7 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-02-06   
720-245 8 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2012-01-10   
720-245 9 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2012-01-10   
720-246 A Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-247 A Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-247 0 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-247 1 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-247 2 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-247 3 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-247 4 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-247 5 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-247 6 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-247 7 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-247 8 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-247 9 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2004-07-15   
720-248 A Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-248 0 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-07-03   
720-248 1 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      

<< 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: VoIP Much Phone Company

Like this site? We accept donations via PayPal.