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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-430 8 Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-430 9 Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-431 A Gypsum CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-431 0 Gypsum CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
970-431 1 Gypsum CO DNVRCO03DS1  5972 INTERLINK ADV SVC DBA FORETHOUGHT.NET - CO 656      
970-431 2 Gypsum CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-431 3 Gypsum CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-431 4 Gypsum CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-431 5 Gypsum CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-431 6 Gypsum CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-431 7 Gypsum CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-431 8 Gypsum CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-431 9 Gypsum CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
970-432 A Eagle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-432 0 Eagle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-432 1 Eagle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-432 2 Eagle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-432 3 Eagle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-432 4 Eagle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-432 5 Eagle CO DNVRCO03DS1  5972 INTERLINK ADV SVC DBA FORETHOUGHT.NET - CO 656      
970-432 6 Eagle CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
970-432 7 Eagle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-432 8 Eagle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-432 9 Eagle CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-433 A Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-433 0 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-433 1 Grand Junction CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-433 2 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-433 3 Grand Junction CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-433 4 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-433 5 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-433 6 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-433 7 Grand Junction CO   792K CHARTER IP ENABLED SERVICES, LLC 656      
970-433 8 Grand Junction CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-433 9 Grand Junction CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-434 A Grand Junction CO CFTNCONMDS0  9636 QWEST CORPORATION 656      
970-435 A South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 0 South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 1 South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 2 South Laramie CO CHYNWYMAEMD  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 654      
970-435 3 South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 4 South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 5 South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 6 South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 7 South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 8 South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-435 9 South Laramie CO LARMWYNMDS0  9636 QWEST CORPORATION 654      
970-436 A Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-436 0 Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-436 1 Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-436 2 Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-436 3 Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-436 4 Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-436 5 Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-436 6 Lake City CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
970-436 7 Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-436 8 Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-436 9 Lake City CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-437 A New Raymer CO WGNSCOXCDS1  2209 WIGGINS TEL. ASSN. 656      
970-438 A Palisade CO   792K CHARTER IP ENABLED SERVICES, LLC 656      
970-438 0 Palisade CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-438 1 Palisade CO DNVRCO26XIX  073H TELNYX LLC 656      
970-438 2 Palisade CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-438 3 Palisade CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-438 4 Palisade CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
970-438 5 Palisade CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-438 6 Palisade CO   792K CHARTER IP ENABLED SERVICES, LLC 656      
970-438 7 Palisade CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
970-438 8 Palisade CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-438 9 Palisade CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-439 A Steamboat Springs CO DNVRCOMA33Z  7421 AT&T - LOCAL 656      
970-439 0 Steamboat Springs CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
970-439 1 Steamboat Springs CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
970-439 2 Steamboat Springs CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
970-439 3 Steamboat Springs CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
970-439 4 Steamboat Springs CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
970-439 7 Steamboat Springs CO FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
970-439 8 Steamboat Springs CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-439 9 Steamboat Springs CO DNVRCOMAX5Z  7421 AT&T - LOCAL 656      
970-440 A Rifle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-440 0 Rifle CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-440 1 Rifle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-440 2 Rifle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-440 3 Rifle CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
970-440 4 Rifle CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
970-440 5 Rifle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-440 6 Rifle CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-440 7 Rifle CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-440 8 Rifle CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-440 9 Rifle CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-441 A Fort Morgan CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-441 0 Fort Morgan CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-441 1 Fort Morgan CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-441 2 Fort Morgan CO   145J TERRA NOVA TELECOM INC. 656      
970-441 3 Fort Morgan CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-441 4 Fort Morgan CO   829J PAETEC ITEL, LLC 656      
970-441 5 Fort Morgan CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-441 6 Fort Morgan CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
970-441 7 Fort Morgan CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-441 8 Fort Morgan CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - 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 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 >>

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.