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
970-885 1 South Big Springs CO BGSPNENWRS1  9631 QWEST CORPORATION 646      
970-885 2 South Big Springs CO BGSPNENWRS1  9631 QWEST CORPORATION 646      
970-885 3 South Big Springs CO BGSPNENWRS1  9631 QWEST CORPORATION 646      
970-885 4 South Big Springs CO BGSPNENWRS1  9631 QWEST CORPORATION 646      
970-885 5 South Big Springs CO BGSPNENWRS1  9631 QWEST CORPORATION 646      
970-885 6 South Big Springs CO BGSPNENWRS1  9631 QWEST CORPORATION 646      
970-885 7 South Big Springs CO GDISNENWUMD  508J CENTURYLINK COMMUNICATIONS, LLC 646      
970-885 8 South Big Springs CO BGSPNENWRS1  9631 QWEST CORPORATION 646      
970-885 9 South Big Springs CO BGSPNENWRS1  9631 QWEST CORPORATION 646      
970-886 A Crook CO CROKCOXCRS0  2190 HAXTUN TEL. CO. 656      
970-887 A Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-887 0 Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-887 1 Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-887 2 Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-887 3 Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-887 4 Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-887 5 Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-887 6 Granby CO DNVRCO26XSX  145J TERRA NOVA TELECOM INC. 656      
970-887 7 Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-887 8 Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-887 9 Granby CO GRNBCOMADS0  9636 QWEST CORPORATION 656      
970-888 A Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-888 0 Greeley CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-888 1 Greeley CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-888 2 Greeley CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-888 3 Greeley CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
970-888 4 Greeley CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-888 5 Greeley CO DNVRCOMAGT7  588A ZIPPYTECH INCORPORATED 656      
970-888 6 Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-888 7 Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-888 8 Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-888 9 Greeley CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-889 A Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-889 0 Fort Collins CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-889 1 Fort Collins CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-889 2 Fort Collins CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-889 3 Fort Collins CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-889 4 Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-889 5 Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-889 6 Fort Collins CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-889 7 Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-889 8 Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-889 9 Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-890 A Oak Creek CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-890 0 Oak Creek CO DNVRCO26XIX  073H TELNYX LLC 656      
970-890 1 Oak Creek CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-890 3 Oak Creek CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-890 6 Oak Creek CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
970-890 7 Oak Creek CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-890 8 Oak Creek CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-890 9 Oak Creek CO   515J IP HORIZON LLC 656      
970-891 A New Castle CO   939H COMMIO, LLC 656   2024-05-11   
970-891 0 New Castle CO   939H COMMIO, LLC 656      
970-891 1 New Castle CO   939H COMMIO, LLC 656      
970-891 9 New Castle CO   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-892 A Grand Junction CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2024-05-09   
970-892 0 Grand Junction CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-892 1 Grand Junction CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-892 2 Grand Junction CO   732J NUSO, LLC 656      
970-892 3 Grand Junction CO   026D ONVOY, LLC - CO 656      
970-892 4 Grand Junction CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-892 5 Grand Junction CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-892 6 Grand Junction CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-892 7 Grand Junction CO   732J NUSO, LLC 656      
970-892 8 Grand Junction CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-893 A Fort Collins CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-893 0 Fort Collins CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-893 1 Fort Collins CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-893 2 Fort Collins CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
970-893 3 Fort Collins CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-893 4 Fort Collins CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
970-893 5 Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-893 6 Fort Collins CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-893 7 Fort Collins CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-893 8 Fort Collins CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-893 9 Fort Collins CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-894 A Berthoud CO   026D ONVOY, LLC - CO 656   2024-05-19   
970-894 0 Berthoud CO   026D ONVOY, LLC - CO 656      
970-894 1 Berthoud CO   515J IP HORIZON LLC 656      
970-894 6 Berthoud CO   7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
970-894 9 Berthoud CO   026D ONVOY, LLC - CO 656      
970-895 A Grover CO WGNSCOXCDS1  2209 WIGGINS TEL. ASSN. 656      
970-896 A Steamboat Springs CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-896 0 Steamboat Springs CO   515J IP HORIZON LLC 656      
970-896 1 Steamboat Springs CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-896 2 Steamboat Springs CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-896 3 Steamboat Springs CO DNVRCOMA51Z  839J EON TELECOM, INC. 656      
970-896 4 Steamboat Springs CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-896 5 Steamboat Springs CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-896 6 Steamboat Springs CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-896 7 Steamboat Springs CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-896 8 Steamboat Springs CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-896 9 Steamboat Springs CO DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-897 A Nunn CO NUNNCOXCDS0  2194 NUNN TEL. CO. 656      
970-898 A Fort Collins CO DNVRCOMDDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
970-899 A Lodore CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-899 9 Lodore CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-900 A Fort Collins CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-900 0 Fort Collins CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-900 1 Fort Collins CO DNVTCOZIDS1  026D ONVOY, 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: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.