Local Calling Guide
Area code/prefix search
Denver, 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 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 720-433
| 7 |
|
9636 QWEST CORPORATION |
656 |
|
2009-05-08 |
|
| 720-433
| 8 |
|
9636 QWEST CORPORATION |
656 |
|
2009-05-08 |
|
| 720-433
| 9 |
|
9636 QWEST CORPORATION |
656 |
|
2009-05-08 |
|
| 720-434
| A |
DNVRCOMD4MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
656 |
|
|
|
| 720-435
| A |
DNVRCOMD4MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
656 |
|
|
|
| 720-436
| A |
DNVRCOMD4MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
656 |
|
|
|
| 720-437
| A |
AURRCO20AMD |
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
|
|
| 720-437
| 0 |
|
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
2011-03-25 |
|
| 720-437
| 1 |
|
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
2011-04-09 |
|
| 720-437
| 2 |
|
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
656 |
|
2011-03-28 |
|
| 720-437
| 3 |
|
490J DISH WIRELESS, LLC |
656 |
|
2024-09-16 |
|
| 720-437
| 4 |
|
490J DISH WIRELESS, LLC |
656 |
|
2024-10-30 |
|
| 720-437
| 5 |
|
3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM |
656 |
|
2011-03-28 |
|
| 720-437
| 6 |
|
829J PAETEC ITEL, LLC |
656 |
|
2011-04-16 |
|
| 720-437
| 7 |
|
026D ONVOY, LLC - CO |
656 |
|
2024-12-14 |
|
| 720-437
| 8 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2011-04-29 |
|
| 720-437
| 9 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2011-04-29 |
|
| 720-439
| A |
DNVRCOMD4MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
656 |
|
|
|
| 720-439
| 0 |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
656 |
|
2010-06-20 |
|
| 720-439
| 1 |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
656 |
|
2010-06-20 |
|
| 720-439
| 2 |
|
6118 LEVEL 3 COMMUNICATIONS, LLC - CO |
656 |
|
2011-01-27 |
|
| 720-439
| 3 |
|
6118 LEVEL 3 COMMUNICATIONS, LLC - CO |
656 |
|
2011-04-24 |
|
| 720-439
| 4 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2010-07-10 |
|
| 720-439
| 5 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2010-07-10 |
|
| 720-439
| 6 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2010-07-10 |
|
| 720-439
| 7 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2010-07-10 |
|
| 720-439
| 8 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2010-07-10 |
|
| 720-439
| 9 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2010-07-10 |
|
| 720-440
| A |
DNVRCOMD4MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
656 |
|
|
|
| 720-440
| 0 |
|
6010 NEW CINGULAR WIRELESS PCS, LLC |
656 |
|
2010-07-10 |
|
| 720-440
| 1 |
|
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
2011-03-16 |
|
| 720-440
| 2 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2010-07-13 |
|
| 720-440
| 3 |
|
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
2011-04-05 |
|
| 720-440
| 4 |
|
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
2011-04-05 |
|
| 720-440
| 5 |
|
026D ONVOY, LLC - CO |
656 |
|
2011-03-28 |
|
| 720-440
| 6 |
|
4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO |
656 |
|
2011-03-18 |
|
| 720-440
| 7 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2010-09-04 |
|
| 720-440
| 8 |
|
829J PAETEC ITEL, LLC |
656 |
|
2010-08-31 |
|
| 720-440
| 9 |
|
318J COMCAST IP PHONE, LLC |
656 |
|
2010-09-19 |
|
| 720-441
| A |
DNVRCOMAXGZ |
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
|
|
| 720-441
| 0 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2011-07-16 |
|
| 720-441
| 1 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2011-07-16 |
|
| 720-441
| 2 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2011-07-16 |
|
| 720-441
| 3 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2011-07-16 |
|
| 720-441
| 4 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2011-07-16 |
|
| 720-441
| 5 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2011-07-16 |
|
| 720-441
| 6 |
|
078F BANDWIDTH.COM CLEC, LLC - CO |
656 |
|
2011-07-16 |
|
| 720-441
| 7 |
|
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
2011-08-01 |
|
| 720-441
| 8 |
|
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
2011-08-15 |
|
| 720-441
| 9 |
|
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
2011-08-15 |
|
<< 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 >>
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
Sponsored by: VoIP.ms
Like this site? We accept donations via PayPal.