Colorado
Area codes
1
Rate centres
80
Carriers
66
Prefix blocks
4,744
A Local Access and Transport Area is the region a call is routed within before it becomes long-haul. The boundaries were drawn when the Bell System was broken up in 1984: a local carrier could carry a call inside its LATA, and a long-distance carrier had to take it across one. The division still shapes how calls are routed and rated today, which is why every prefix block on this site carries a LATA.
66 carriers hold blocks here. The 25 largest are shown.
| Carrier | OCN | Blocks | Share |
|---|---|---|---|
| ONVOY, LLC - CO | 026D | 889 | 18.7% |
| QWEST CORPORATION | 9636 | 549 | 11.6% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | 519 | 10.9% |
| T-MOBILE USA, INC. | 6529 | 475 | 10.0% |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 459 | 9.7% |
| BANDWIDTH.COM CLEC, LLC - CO | 078F | 281 | 5.9% |
| LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | 202 | 4.3% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CO | 7378 | 158 | 3.3% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 123 | 2.6% |
| METROPCS, INC. | 5562 | 116 | 2.4% |
| COMCAST IP PHONE, LLC | 318J | 90 | 1.9% |
| PEERLESS NETWORK OF COLORADO, LLC - CO | 278F | 84 | 1.8% |
| CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK | 2185 | 78 | 1.6% |
| ONVOY SPECTRUM, LLC | 624H | 71 | 1.5% |
| TON80 COMMUNICATIONS, LLC | 516J | 63 | 1.3% |
| LEVEL 3 TELECOM OF COLORADO, LLC - CO | 7590 | 59 | 1.2% |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 56 | 1.2% |
| TERRA NOVA TELECOM INC. | 145J | 50 | 1.1% |
| TELNYX LLC | 073H | 42 | 0.9% |
| COMMIO, LLC | 939H | 40 | 0.8% |
| N.E. COLORADO CELLULAR, INC. | 6874 | 32 | 0.7% |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 28 | 0.6% |
| HD CARRIER LLC | 321J | 28 | 0.6% |
| PAETEC ITEL, LLC | 829J | 25 | 0.5% |
| IP HORIZON LLC | 515J | 19 | 0.4% |
80 rate centres. search them all.