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
720-604 5 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-604 6 Denver CO DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656      
720-604 7 Denver CO DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656      
720-604 8 Denver CO DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656      
720-604 9 Denver CO DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656      
720-605 A Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 0 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 1 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 2 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 3 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 4 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 5 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 6 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 7 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 8 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-605 9 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-606 A Fort Lupton CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-606 0 Fort Lupton CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
720-606 1 Fort Lupton CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-606 2 Fort Lupton CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-606 3 Fort Lupton CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-606 4 Fort Lupton CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-606 5 Fort Lupton CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-606 6 Fort Lupton CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-606 7 Fort Lupton CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-606 8 Fort Lupton CO   829J PAETEC ITEL, LLC 656      
720-606 9 Fort Lupton CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-607 A Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 6 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 7 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-607 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-608 A Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-608 0 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-608 1 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-608 2 Georgetown CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-608 3 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-608 4 Georgetown CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-608 5 Georgetown CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-608 6 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-608 7 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-608 8 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-608 9 Georgetown CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-609 A Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-609 0 Denver CO DNVRCOII4MD  5562 METROPCS, INC. 656      
720-609 1 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-609 2 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-609 3 Denver CO DNVRCOII4MD  5562 METROPCS, INC. 656      
720-609 4 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-609 5 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-609 6 Denver CO DNVRCOII4MD  5562 METROPCS, INC. 656      
720-609 7 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-609 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-609 9 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-610 A Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 5 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 6 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 7 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 8 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-610 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-612 A Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-612 0 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-612 1 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-612 2 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-612 3 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-612 4 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-612 5 Denver CO AURSCOFWDS0  4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
720-612 6 Denver CO AURSCOFWDS0  4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
720-612 7 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-612 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-612 9 Denver CO   6529 T-MOBILE USA, INC. 656      
720-613 A Hudson CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-613 0 Hudson CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
720-613 1 Hudson CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
720-613 2 Hudson CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-613 3 Hudson CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-613 4 Hudson CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-613 5 Hudson CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-613 6 Hudson CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-613 7 Hudson CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
720-613 8 Hudson CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-613 9 Hudson CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-614 A Denver CO DNVRCO26XOX  996H AIRESPRING, INC. 656      
720-614 0 Denver CO DNVRCO26XOX  996H AIRESPRING, INC. 656      
720-614 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-614 2 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-614 3 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-614 4 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-614 5 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 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: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.