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.

Denver, CO

<< 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 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
720-638 2 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-638 3 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-638 4 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-638 5 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-638 6 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-638 7 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-638 8 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-638 9 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-639 A DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-639 0 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-639 1 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-639 2 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-639 3 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-639 4 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-639 5 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-639 6 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-639 7 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-639 8 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-639 9 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-641 A DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-641 0 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-641 1 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-641 2 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-641 3 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-641 4 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-641 5 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-641 6   5562 METROPCS, INC. 656      
720-641 7 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-641 8 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-642 A AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-642 0 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-642 1 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-642 2 DNVRCOII4MD  5562 METROPCS, INC. 656      
720-642 3 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-642 4 DNVRCOII4MD  5562 METROPCS, INC. 656      
720-642 5 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-642 6 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-642 7 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-642 8 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-642 9 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-643 A DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-643 0 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-643 1 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-643 2 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-643 3 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-643 4 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-643 5 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-643 6 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-643 7 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-643 8 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-643 9 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-644 A   829J PAETEC ITEL, LLC 656      
720-644 0 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-644 1 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-644 2   829J PAETEC ITEL, LLC 656      
720-644 3   829J PAETEC ITEL, LLC 656      
720-644 4   829J PAETEC ITEL, LLC 656      
720-644 5   829J PAETEC ITEL, LLC 656      
720-644 6 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-644 7 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-644 8 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-644 9 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-645 A DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-645 0 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-645 1 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-645 2 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-645 3 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-645 4 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-645 5 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-645 6 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-645 7 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-645 8 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-645 9 DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-646 A DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-646 0 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-646 1 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-646 2 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-646 3 AURSCOFWDS0  4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO 656      
720-646 4 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-646 5 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-646 6 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-646 7 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-646 8 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-646 9 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
720-647 A DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-647 0 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-647 1 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-647 2 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-647 3 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-647 4 DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-647 5 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-647 6 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-647 7 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-647 8 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-647 9 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
720-648 A AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-648 0 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-648 1 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-648 2 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-648 3 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.