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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-753 5 Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-08-11   
970-753 6 Fruita CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-09-03   
970-753 7 Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-09-09   
970-753 8 Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-09-09   
970-753 9 Fruita CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2019-08-16   
970-754 A Vail CO GYPSCO03DS0  4164 SAN ISABEL TELECOM, INC. - CO 656      
970-755 A Rangely CO STSPCO052MD  013B UNION TELEPHONE COMPANY 656      
970-756 A Craig CO STSPCO052MD  013B UNION TELEPHONE COMPANY 656      
970-757 A Hayden CO STSPCO052MD  013B UNION TELEPHONE COMPANY 656      
970-758 A Fraser CO STSPCO052MD  013B UNION TELEPHONE COMPANY 656      
970-759 A Durango CO DURNCOMA6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-760 A Dillon CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-760 0 Dillon CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2010-01-23   
970-760 1 Dillon CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-09-29   
970-760 3 Dillon CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2021-10-07   
970-760 4 Dillon CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2021-10-07   
970-760 6 Dillon CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-16   
970-760 7 Dillon CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-16   
970-760 8 Dillon CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2024-07-03   
970-760 9 Dillon CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2024-07-03   
970-761 A Steamboat Springs CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-761 0 Steamboat Springs CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2010-06-03   
970-761 1 Steamboat Springs CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-05-10   
970-761 2 Steamboat Springs CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2010-11-30   
970-761 3 Steamboat Springs CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2017-08-30   
970-761 4 Steamboat Springs CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-03-14   
970-761 5 Steamboat Springs CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2015-06-07   
970-761 6 Steamboat Springs CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-03-14   
970-761 7 Steamboat Springs CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-11-05   
970-761 8 Steamboat Springs CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2018-12-25   
970-761 9 Steamboat Springs CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2016-12-16   
970-762 A Sterling CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-762 0 Sterling CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-762 1 Sterling CO DNVRCO26XIX  073H TELNYX LLC 656   2017-06-09   
970-762 2 Sterling CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-09-09   
970-762 3 Sterling CO DNVRCO26XUX  516J TON80 COMMUNICATIONS, LLC 656   2021-09-19   
970-762 4 Sterling CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-25   
970-762 5 Sterling CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656   2013-07-08   
970-762 6 Sterling CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-25   
970-762 7 Sterling CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-11-05   
970-762 8 Sterling CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2018-05-15   
970-762 9 Sterling CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2021-03-04   
970-763 A Vail CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-763 0 Vail CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-763 1 Vail CO DNVRCO26XIX  073H TELNYX LLC 656   2017-03-23   
970-763 2 Vail CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2018-08-31   
970-763 3 Vail CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2019-01-03   
970-763 4 Vail CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2018-12-25   
970-763 5 Vail CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-05-18   
970-763 6 Vail CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2018-12-31   
970-763 7 Vail CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2006-10-29   
970-763 8 Vail CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2018-11-16   
970-763 9 Vail CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2018-12-31   
970-764 A Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-764 0 Durango CO DURNCOMA6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2008-01-05   
970-764 1 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656   2005-09-19   
970-764 2 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656   2005-09-19   
970-764 3 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656   2005-09-19   
970-764 4 Durango CO GDJTCOFD5MD  792K CHARTER IP ENABLED SERVICES, LLC 656   2005-02-07   
970-764 5 Durango CO DURNCOMA6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2006-10-12   
970-764 6 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656   2005-06-27   
970-764 7 Durango CO DURNCOMA6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2007-05-06   
970-764 8 Durango CO DURNCOMA6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2008-01-05   
970-764 9 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656   2005-09-19   
970-765 A Montrose CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-765 0 Montrose CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-06-23   
970-765 1 Montrose CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-10-12   
970-765 2 Montrose CO GDJTCOFD5MD  792K CHARTER IP ENABLED SERVICES, LLC 656   2009-09-14   
970-765 3 Montrose CO MTRSCOMADS0  9636 QWEST CORPORATION 656   2010-11-04   
970-765 4 Montrose CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2011-02-07   
970-765 5 Montrose CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2006-09-28   
970-765 6 Montrose CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-06-14   
970-765 7 Montrose CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-02-20   
970-765 8 Montrose CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
970-765 9 Montrose CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2009-02-17   
970-766 A Edwards CO GYPSCO03DS0  4164 SAN ISABEL TELECOM, INC. - CO 656      
970-767 A Fort Collins CO STSPCO052MD  013B UNION TELEPHONE COMPANY 656      
970-768 A Fort Morgan CO DNVRCOMA47Z  6874 N.E. COLORADO CELLULAR, INC. 656      
970-769 A Durango CO DURNCOMA6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-770 A Montrose CO STSPCO052MD  013B UNION TELEPHONE COMPANY 656      
970-771 A Breckenridge CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
970-771 0 Breckenridge CO DNVRCO26XIX  073H TELNYX LLC 656   2018-05-02   
970-771 1 Breckenridge CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-06-27   
970-771 2 Breckenridge CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2014-06-26   
970-771 3 Breckenridge CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2014-07-10   
970-771 4 Breckenridge CO DNVRCOMA31Z  710A ALLO COMMUNICATIONS, LLC - NE 656   2019-06-24   
970-771 5 Breckenridge CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2019-08-28   
970-771 6 Breckenridge CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2020-01-15   
970-771 7 Breckenridge CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-18   
970-771 8 Breckenridge CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-18   
970-771 9 Breckenridge CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2020-12-03   
970-772 A Gilcrest CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-772 0 Gilcrest CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-28   
970-772 1 Gilcrest CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-28   
970-772 2 Gilcrest CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-03-07   
970-772 3 Gilcrest CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-03-07   
970-772 4 Gilcrest CO DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656   2025-01-03   
970-772 5 Gilcrest CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2023-04-27   
970-772 6 Gilcrest CO DNVRCO26XUX  516J TON80 COMMUNICATIONS, LLC 656   2021-09-18   
970-772 7 Gilcrest CO DNVRCO26XSX  145J TERRA NOVA TELECOM INC. 656   2024-08-08   

<< 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 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.