Illinois, Indiana
Area codes
4
Rate centres
26
Carriers
43
Prefix blocks
865
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.
43 carriers hold blocks here. The 25 largest are shown.
| Carrier | OCN | Blocks | Share |
|---|---|---|---|
| FRONTIER NORTH, INC.. - IN | 0772 | 113 | 13.1% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 103 | 11.9% |
| ONVOY, LLC - IN | 097D | 87 | 10.1% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | 70 | 8.1% |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | 65 | 7.5% |
| ONVOY, LLC | 224C | 59 | 6.8% |
| ONVOY SPECTRUM, LLC | 624H | 45 | 5.2% |
| LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | 38 | 4.4% |
| METROPCS, INC. | 5562 | 37 | 4.3% |
| FRONTIER NORTH, INC. - IL | 1015 | 26 | 3.0% |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 23 | 2.7% |
| TWC IP ENABLED SERVICES, LLC | 793K | 23 | 2.7% |
| FRONTIER NORTH, INC. - IN | 0779 | 17 | 2.0% |
| TELNYX LLC | 073H | 17 | 2.0% |
| TERRA NOVA TELECOM INC. | 145J | 16 | 1.8% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | 14 | 1.6% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - IN | 7314 | 11 | 1.3% |
| YMAX COMMUNICATIONS CORP. - IN | 352E | 10 | 1.2% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | 8 | 0.9% |
| SMITHVILLE COMM., INC DBA SMITHVILLE TELEPHONE CO. | 0818 | 8 | 0.9% |
| LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | 7 | 0.8% |
| BOOST SUBSCRIBERCO L.L.C. | 490J | 6 | 0.7% |
| HD CARRIER LLC | 321J | 6 | 0.7% |
| NUSO, LLC | 478J | 6 | 0.7% |
| PEERLESS NETWORK OF INDIANA, LLC - IN | 279F | 5 | 0.6% |
26 rate centres. search them all.