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
970-609 A Grand Junction CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-610 A Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-610 0 Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-610 1 Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-610 3 Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-11-14   
970-610 4 Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-11-14   
970-610 5 Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2021-11-14   
970-610 6 Fruita CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-610 7 Fruita CO DNVRCO26XJX  939H COMMIO, LLC 656   2022-07-29   
970-610 8 Fruita CO DNVTCOZI6MD  073H TELNYX LLC 656   2021-11-28   
970-610 9 Fruita CO   515J IP HORIZON LLC 656   2022-04-29   
970-612 A Loveland CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
970-612 0 Loveland CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
970-612 1 Loveland CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
970-612 2 Loveland CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
970-612 3 Loveland CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
970-612 4 Loveland CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
970-612 5 Loveland CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
970-612 6 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2018-04-05   
970-612 7 Loveland CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
970-612 8 Loveland CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-04-26   
970-612 9 Loveland CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656      
970-613 A Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-613 0 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-613 1 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-613 2 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-613 3 Loveland CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2015-06-02   
970-613 4 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-613 5 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-613 6 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-613 7 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-613 8 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-613 9 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-614 A La Salle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-614 0 La Salle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2006-02-05   
970-614 1 La Salle CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-27   
970-614 2 La Salle CO   145J TERRA NOVA TELECOM INC. 656   2022-06-30   
970-614 3 La Salle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-614 4 La Salle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2013-04-12   
970-614 5 La Salle CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
970-614 6 La Salle CO DNVTCO56AMD  8465 GLOBAL CROSSING LOCAL SERVICES, INC. - CO 656   2011-01-14   
970-614 7 La Salle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2007-04-09   
970-614 8 La Salle CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-06-23   
970-614 9 La Salle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-615 A Montrose CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-615 0 Montrose CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-11-18   
970-615 1 Montrose CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-615 2 Montrose CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-615 3 Montrose CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-615 4 Montrose CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-615 5 Montrose CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-13   
970-615 6 Montrose CO FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2012-12-13   
970-615 7 Montrose CO GDJTCOFD5MD  792K CHARTER IP ENABLED SERVICES, LLC 656   2014-04-13   
970-615 8 Montrose CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2015-06-15   
970-615 9 Montrose CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-27   
970-616 A Greeley CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
970-616 0 Greeley CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-11-14   
970-616 1 Greeley CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2011-11-23   
970-616 2 Greeley CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-04-04   
970-616 3 Greeley CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2011-11-17   
970-616 4 Greeley CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2012-05-21   
970-616 5 Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-12   
970-616 6 Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-08-01   
970-616 7 Greeley CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2012-09-11   
970-616 8 Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-12   
970-616 9 Greeley CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2012-08-30   
970-617 A Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-617 0 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-01-22   
970-617 1 Loveland CO DNVRCO26XIX  073H TELNYX LLC 656   2017-03-23   
970-617 2 Loveland CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2017-01-30   
970-617 3 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-05-06   
970-617 4 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-05-06   
970-617 5 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2018-04-05   
970-617 6 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-28   
970-617 7 Loveland CO DNVRCOII4MD  5562 METROPCS, INC. 656   2017-03-22   
970-617 8 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-28   
970-617 9 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2017-10-28   
970-618 A Glenwood Springs CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-619 A Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-619 0 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2007-11-11   
970-619 1 Loveland CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-01-07   
970-619 2 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-619 3 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-619 4 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-619 5 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-619 6 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-619 7 Loveland CO LVLDCOMADS0  9636 QWEST CORPORATION 656      
970-619 8 Loveland CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2010-08-16   
970-619 9 Loveland CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2008-04-10   
970-620 A Craig CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-620 0 Craig CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-620 1 Craig CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-620 2 Craig CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-620 3 Craig CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2007-02-15   
970-620 4 Craig CO GDJTCOFD5MD  792K CHARTER IP ENABLED SERVICES, LLC 656   2006-06-20   
970-620 5 Craig CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2007-11-16   
970-620 6 Craig CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-02-18   
970-620 7 Craig CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-06-12   
970-620 8 Craig CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2015-06-27   
970-620 9 Craig CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2013-03-24   

<< 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.