Colorado, New Mexico, Oklahoma, Texas
Area codes
4
Rate centres
100
Carriers
56
Prefix blocks
2,272
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.
56 carriers hold blocks here. The 25 largest are shown.
| Carrier | OCN | Blocks | Share |
|---|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 322 | 14.2% |
| ONVOY, LLC - TX | 903C | 280 | 12.3% |
| SOUTHWESTERN BELL | 9533 | 267 | 11.8% |
| VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 1163 | 194 | 8.5% |
| T-MOBILE USA, INC. | 6529 | 168 | 7.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | 149 | 6.6% |
| BANDWIDTH.COM CLEC, LLC - TX | 004F | 100 | 4.4% |
| VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | 1181 | 96 | 4.2% |
| LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | 79 | 3.5% |
| IP HORIZON LLC | 515J | 59 | 2.6% |
| ONVOY SPECTRUM, LLC | 624H | 47 | 2.1% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | 41 | 1.8% |
| METROPCS, INC. | 5562 | 40 | 1.8% |
| TERRA NOVA TELECOM INC. | 145J | 40 | 1.8% |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 36 | 1.6% |
| AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX | 0132 | 35 | 1.5% |
| CEBRIDGE TELECOM TX , L.P. - TX | 318C | 31 | 1.4% |
| PANHANDLE TELEPHONE COOPERATIVE, INC. | 2016 | 29 | 1.3% |
| TELNYX LLC | 073H | 28 | 1.2% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | 18 | 0.8% |
| VEXUS | 4913 | 18 | 0.8% |
| PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | 468B | 17 | 0.7% |
| AT&T CORP. | 516C | 15 | 0.7% |
| XIT TELECOMMUNICATIONS & TECHNOLOGY, INC. - TX | 7893 | 13 | 0.6% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 11 | 0.5% |
100 rate centres. search them all.