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.

Region: 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 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-712 6 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-03-17   
970-712 7 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-03-17   
970-712 8 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-03-31   
970-712 9 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-04-14   
970-713 A Crested Butte CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-713 0 Crested Butte CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2015-06-27   
970-713 1 Crested Butte CO DNVRCO26XIX  073H TELNYX LLC 656   2018-05-02   
970-713 2 Crested Butte CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-06-01   
970-713 3 Crested Butte CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-06-01   
970-713 4 Crested Butte CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2020-10-30   
970-713 6 Crested Butte CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-03-07   
970-713 7 Crested Butte CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-05-23   
970-713 8 Crested Butte CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2018-12-30   
970-713 9 Crested Butte CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2018-12-30   
970-714 A Greeley CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-714 0 Greeley CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2014-10-23   
970-714 1 Greeley CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2014-10-23   
970-714 2 Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2014-10-19   
970-714 3 Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2014-10-19   
970-714 4 Greeley CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2014-10-23   
970-714 5 Greeley CO GRELCOJCRS1  9636 QWEST CORPORATION 656   2015-08-31   
970-714 6 Greeley CO DNVRCOII0MD  5562 METROPCS, INC. 656   2017-03-22   
970-714 7 Greeley CO DURNCOBSDS0  330B FASTTRACK COMMUNICATIONS, INC. - CO 656   2015-01-02   
970-714 8 Greeley CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2015-06-11   
970-714 9 Greeley CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2014-10-16   
970-715 A Mancos CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-715 0 Mancos CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2014-11-16   
970-715 1 Mancos CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2015-11-16   
970-715 2 Mancos CO FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2020-11-17   
970-715 4 Mancos CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-03-07   
970-715 5 Mancos CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2020-10-30   
970-715 6 Mancos CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2018-12-30   
970-715 7 Mancos CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-11-18   
970-715 8 Mancos CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2018-12-30   
970-715 9 Mancos CO DNVRCO26XIX  073H TELNYX LLC 656   2018-05-02   
970-716 A Eaton CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-716 0 Eaton CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
970-716 1 Eaton CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-09-04   
970-716 3 Eaton CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-12   
970-716 4 Eaton CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-12   
970-716 5 Eaton CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-05-23   
970-716 6 Eaton CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2014-08-08   
970-716 7 Eaton CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2007-01-04   
970-716 8 Eaton CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-26   
970-716 9 Eaton CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-26   
970-717 A Hayden CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
970-717 0 Hayden CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2012-03-19   
970-717 1 Hayden CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-17   
970-717 2 Hayden CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2015-08-05   
970-717 3 Hayden CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2019-11-28   
970-717 4 Hayden CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-09-09   
970-717 5 Hayden CO DNVRCO26XIX  073H TELNYX LLC 656   2018-05-02   
970-717 6 Hayden CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-05-23   
970-717 7 Hayden CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-03-20   
970-717 8 Hayden CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-27   
970-717 9 Hayden CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-27   
970-718 A Basalt CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-718 0 Basalt CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-06-01   
970-718 1 Basalt CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-06-01   
970-718 2 Basalt CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2015-06-27   
970-718 3 Basalt CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-03-24   
970-718 4 Basalt CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-03-24   
970-718 5 Basalt CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2016-05-09   
970-718 6 Basalt CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2017-06-05   
970-718 7 Basalt CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-05-22   
970-718 8 Basalt CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2018-08-09   
970-718 9 Basalt CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2015-06-14   
970-721 A Mead CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-721 0 Mead CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-29   
970-721 1 Mead CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-29   
970-721 2 Mead CO DNVRCO26XUX  516J TON80 COMMUNICATIONS, LLC 656   2021-11-11   
970-721 3 Mead CO DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656   2025-01-03   
970-721 4 Mead CO   515J IP HORIZON LLC 656   2022-09-22   
970-721 5 Mead CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2024-02-20   
970-721 6 Mead CO   641H TDS BROADBAND SERVICE LLC 656   2025-11-03   
970-721 8 Mead CO FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2021-06-02   
970-721 9 Mead CO DNVRCO26XIX  073H TELNYX LLC 656   2017-06-09   
970-722 A Fraser CO FRSRCOMADS0  9636 QWEST CORPORATION 656      
970-722 0 Fraser CO FRSRCOMADS0  9636 QWEST CORPORATION 656      
970-722 1 Fraser CO FRSRCOMADS0  9636 QWEST CORPORATION 656      
970-722 2 Fraser CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2022-12-13   
970-722 3 Fraser CO DNVRCOMA51Z  839J EON TELECOM, INC. 656   2023-06-25   
970-722 4 Fraser CO DNVRCO26XUX  516J TON80 COMMUNICATIONS, LLC 656   2021-09-23   
970-722 5 Fraser CO FRSRCOMADS0  9636 QWEST CORPORATION 656      
970-722 6 Fraser CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2006-01-29   
970-722 7 Fraser CO FRSRCOMADS0  9636 QWEST CORPORATION 656      
970-722 8 Fraser CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2022-01-28   
970-722 9 Fraser CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-09-16   
970-723 A Walden CO WLDNCOXCDS0  2185 CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK 656      
970-724 A Kremmling CO KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 0 Kremmling CO KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 1 Kremmling CO KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 2 Kremmling CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-17   
970-724 3 Kremmling CO KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 4 Kremmling CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2012-04-15   
970-724 5 Kremmling CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2006-02-05   
970-724 6 Kremmling CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2020-07-14   
970-724 7 Kremmling CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2007-03-18   
970-724 8 Kremmling CO KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 9 Kremmling CO KRNGCOMARS1  9636 QWEST CORPORATION 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 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 >>

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.