Illinois, Wisconsin
Area codes
6
Rate centres
130
Carriers
66
Prefix blocks
11,595
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 - WI | 225C | 1,520 | 13.1% |
| WISCONSIN BELL INC | 9327 | 1,261 | 10.9% |
| UNITED STATES CELLULAR - WI | 6274 | 1,075 | 9.3% |
| T-MOBILE USA, INC. | 6529 | 1,064 | 9.2% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | 925 | 8.0% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 731 | 6.3% |
| BANDWIDTH.COM CLEC, LLC - WI | 007F | 689 | 5.9% |
| LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | 485 | 4.2% |
| METROPCS, INC. | 5562 | 442 | 3.8% |
| PAETEC ITEL, LLC | 829J | 353 | 3.0% |
| TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | 327 | 2.8% |
| TWC IP ENABLED SERVICES, LLC | 793K | 298 | 2.6% |
| ONVOY SPECTRUM, LLC | 624H | 263 | 2.3% |
| FRONTIER NORTH INC. - WI | 0886 | 258 | 2.2% |
| PEERLESS NETWORK OF WISCONSIN, LLC - WI | 227F | 215 | 1.9% |
| TDS METROCOM, LLC | 520K | 156 | 1.3% |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 130 | 1.1% |
| LEVEL 3 TELECOM OF WISCONSIN, LP - WI | 7322 | 130 | 1.1% |
| TERRA NOVA TELECOM INC. | 145J | 128 | 1.1% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 115 | 1.0% |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 113 | 1.0% |
| TON80 COMMUNICATIONS, LLC | 516J | 96 | 0.8% |
| COMMIO, LLC | 939H | 81 | 0.7% |
| EON TELECOM, INC. | 839J | 81 | 0.7% |
| AT&T CORP. | 516C | 79 | 0.7% |
130 rate centres. search them all.