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
970-772 8 Gilcrest CO DNVTCOZICMD  515J IP HORIZON LLC 656   2024-07-12   
970-772 9 Gilcrest CO DNVRCO26XIX  073H TELNYX LLC 656   2018-05-02   
970-773 A Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-773 0 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-03-27   
970-773 1 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-11-09   
970-773 2 Grand Junction CO GDJTCOMADS0  9636 QWEST CORPORATION 656   2010-01-19   
970-773 3 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-02-08   
970-773 4 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-03-08   
970-773 5 Grand Junction CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-09-04   
970-773 6 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-10-08   
970-773 7 Grand Junction CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-10-24   
970-773 8 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2011-01-03   
970-773 9 Grand Junction CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2010-10-24   
970-774 A Haxtun CO HAXTCOXCDS0  2190 HAXTUN TEL. CO. 656      
970-775 A Loveland CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-775 0 Loveland CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2009-07-12   
970-775 1 Loveland CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2009-12-17   
970-775 2 Loveland CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2014-07-01   
970-775 3 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-18   
970-775 4 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-10-18   
970-775 5 Loveland CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-775 6 Loveland CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-775 7 Loveland CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2012-04-02   
970-775 8 Loveland CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2012-08-18   
970-775 9 Loveland CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-776 A Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-776 0 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-07-08   
970-776 1 Loveland CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2005-11-15   
970-776 2 Loveland CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656      
970-776 3 Loveland CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2005-11-15   
970-776 4 Loveland CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2005-11-15   
970-776 5 Loveland CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2006-06-09   
970-776 6 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2007-08-20   
970-776 7 Loveland CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2006-11-26   
970-776 8 Loveland CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2006-11-05   
970-776 9 Loveland CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2007-02-09   
970-777 A Gypsum CO GYPSCO03DS0  4164 SAN ISABEL TELECOM, INC. - CO 656      
970-778 A Grand Junction CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-778 0 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2004-09-23   
970-778 1 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2005-01-07   
970-778 2 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2005-01-07   
970-778 3 Grand Junction CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2005-02-02   
970-778 4 Grand Junction CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-778 5 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2005-03-11   
970-778 6 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2005-05-01   
970-778 7 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2005-02-10   
970-778 8 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2005-02-10   
970-778 9 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2005-02-10   
970-779 A Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-779 0 Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-779 1 Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2006-03-09   
970-779 2 Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2015-04-13   
970-779 3 Durango CO DURNCOMA6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2009-11-30   
970-779 4 Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2011-09-23   
970-779 5 Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2015-03-30   
970-779 6 Durango CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-26   
970-779 7 Durango CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2011-01-30   
970-779 8 Durango CO DURNCOMA6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2008-05-12   
970-779 9 Durango CO DURNCOMA6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2008-05-12   
970-780 A South Laramie CO CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654      
970-780 2 South Laramie CO CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2021-12-13   
970-780 4 South Laramie CO CSPRWYDN0MD  026D ONVOY, LLC - CO 654   2022-02-05   
970-780 5 South Laramie CO CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2021-08-23   
970-780 7 South Laramie CO CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2021-11-07   
970-780 8 South Laramie CO CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2021-11-07   
970-780 9 South Laramie CO CSPRWYMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2021-11-18   
970-781 A Rifle CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-781 2 Rifle CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2022-06-21   
970-781 7 Rifle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-09-09   
970-781 8 Rifle CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2021-05-31   
970-781 9 Rifle CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2019-01-26   
970-782 A South Big Springs CO GDISNENWJMD  026D ONVOY, LLC - CO 646      
970-782 1 South Big Springs CO GDISNENWXDX  624H ONVOY SPECTRUM, LLC 646   2025-01-03   
970-782 2 South Big Springs CO GDISNENWJMD  026D ONVOY, LLC - CO 646   2021-03-12   
970-782 7 South Big Springs CO GDISNENWJMD  026D ONVOY, LLC - CO 646   2020-01-28   
970-783 A Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-783 0 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-11-17   
970-783 1 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2018-07-10   
970-783 2 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2021-01-04   
970-783 3 Grand Junction CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2021-08-19   
970-783 4 Grand Junction CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-09-09   
970-783 5 Grand Junction CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-09-09   
970-783 6 Grand Junction CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2019-09-09   
970-783 7 Grand Junction CO DNVRCO26DMD  197D VONAGE AMERICA LLC 656   2021-06-11   
970-783 8 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2018-06-01   
970-783 9 Grand Junction CO DNVRCO26DMD  197D VONAGE AMERICA LLC 656   2021-06-11   
970-784 A Gunnison CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-784 0 Gunnison CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2024-06-22   
970-784 1 Gunnison CO   515J IP HORIZON LLC 656   2022-04-29   
970-784 2 Gunnison CO DNVRCO26XUX  516J TON80 COMMUNICATIONS, LLC 656   2021-09-23   
970-784 3 Gunnison CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-11-14   
970-784 4 Gunnison CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-784 5 Gunnison CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-11-14   
970-784 6 Gunnison CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2021-08-27   
970-784 7 Gunnison CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-784 9 Gunnison CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2023-10-22   
970-785 A Platteville CO PTVLCOMARS1  9636 QWEST CORPORATION 656      
970-785 0 Platteville CO PTVLCOMARS1  9636 QWEST CORPORATION 656      
970-785 1 Platteville CO PTVLCOMARS1  9636 QWEST CORPORATION 656      
970-785 2 Platteville CO PTVLCOMARS1  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 >>

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.