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
720-657 A Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-657 0 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-657 1 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-657 2 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-657 3 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-657 4 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-657 5 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-657 6 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-657 7 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-657 8 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-657 9 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2019-04-26   
720-658 A Denver CO WNDSCODCCM0  016G TELSTAR COMMUNICATIONS INC 656      
720-659 A Denver CO DNVRCO26DMD  197D VONAGE AMERICA LLC 656      
720-659 0 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-09-17   
720-659 1 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-09-17   
720-659 2 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-09-17   
720-659 3 Denver CO DNVRCO26DMD  197D VONAGE AMERICA LLC 656   2022-09-16   
720-659 4 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-09-17   
720-659 5 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-09-17   
720-659 6 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-09-17   
720-659 7 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-09-17   
720-659 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-09-17   
720-659 9 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2022-09-17   
720-660 A Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-660 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-660 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-660 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-660 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-660 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-660 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-660 6 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-660 7 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-660 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-660 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2014-05-23   
720-661 A Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-661 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-661 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-661 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-661 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-661 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-661 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-661 6 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-661 7 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-661 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-661 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-02-07   
720-662 A Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-662 0 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-01-19   
720-662 1 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-01-19   
720-662 2 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-01-19   
720-662 3 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-01-19   
720-662 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2015-02-15   
720-662 5 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-03-09   
720-662 6 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-03-09   
720-662 7 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2014-12-01   
720-662 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2014-11-27   
720-662 9 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2014-11-27   
720-663 A Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-663 0 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-07-19   
720-663 1 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
720-663 2 Denver CO FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2008-09-01   
720-663 3 Denver CO DNVRCOMADS8  7421 AT&T - LOCAL 656   2008-07-20   
720-663 4 Denver CO DNVRCOMADS8  7421 AT&T - LOCAL 656   2008-07-20   
720-663 5 Denver CO DNVRCOMADS8  7421 AT&T - LOCAL 656   2008-07-20   
720-663 6 Denver CO DNVRCOMADS8  7421 AT&T - LOCAL 656   2008-07-20   
720-663 7 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
720-663 8 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
720-663 9 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
720-664 A Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-664 0 Allens Park-Lyons CO DNVRCO26XIX  073H TELNYX LLC 656   2019-12-12   
720-664 1 Allens Park-Lyons CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2020-04-16   
720-664 2 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-10-14   
720-664 3 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-10-14   
720-664 4 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-12-12   
720-664 5 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2020-08-08   
720-664 6 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-12-12   
720-664 7 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2020-04-24   
720-664 8 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2020-04-24   
720-664 9 Allens Park-Lyons CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2020-09-07   
720-665 A Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-665 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-14   
720-665 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-14   
720-665 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-14   
720-665 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-14   
720-665 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-14   
720-665 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-14   
720-665 6 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-14   
720-665 7 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-14   
720-665 8 Denver CO DNVRCOII3MD  5562 METROPCS, INC. 656   2017-10-15   
720-665 9 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2017-10-15   
720-666 A Denver CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
720-666 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-18   
720-666 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-18   
720-666 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-18   
720-666 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-18   
720-666 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-18   
720-666 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-18   
720-666 6 Denver CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2012-07-14   
720-666 7 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2012-07-27   
720-666 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-10-30   
720-666 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-10-30   

<< 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: ISP Telecom

Like this site? We accept donations via PayPal.