Iowa, Illinois, Missouri, Wisconsin
Area codes
7
Rate centres
133
Carriers
94
Prefix blocks
3,776
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.
94 carriers hold blocks here. The 25 largest are shown.
| Carrier | OCN | Blocks | Share |
|---|---|---|---|
| ONVOY, LLC - IA | 221F | 391 | 10.4% |
| UNITED STATES CELLULAR - IA | 6266 | 387 | 10.2% |
| T-MOBILE USA, INC. | 6529 | 355 | 9.4% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 242 | 6.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | 224 | 5.9% |
| QWEST CORPORATION | 9631 | 179 | 4.7% |
| WINDSTREAM IOWA COMMUNICATIONS, INC. | 1178 | 169 | 4.5% |
| ONVOY, LLC | 224C | 152 | 4.0% |
| ILLINOIS BELL TEL CO | 9329 | 118 | 3.1% |
| CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | 1183 | 107 | 2.8% |
| ONVOY SPECTRUM, LLC | 624H | 98 | 2.6% |
| BANDWIDTH.COM CLEC, LLC - IA | 985E | 95 | 2.5% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | 95 | 2.5% |
| WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS | 1170 | 89 | 2.4% |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 87 | 2.3% |
| LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | 74 | 2.0% |
| MCC TELEPHONY OF IOWA, LLC - IA | 751F | 70 | 1.9% |
| MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | 64 | 1.7% |
| METROPCS, INC. | 5562 | 62 | 1.6% |
| WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH | 1167 | 62 | 1.6% |
| UNITED STATES CELLULAR - IL | 6265 | 56 | 1.5% |
| PAETEC ITEL, LLC | 829J | 54 | 1.4% |
| TERRA NOVA TELECOM INC. | 145J | 43 | 1.1% |
| LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | 39 | 1.0% |
| STRATUS NETWORKS | 495J | 36 | 1.0% |
133 rate centres. search them all.