Michigan, Wisconsin
Area codes
2
Rate centres
97
Carriers
48
Prefix blocks
1,800
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.
48 carriers hold blocks here. The 25 largest are shown.
| Carrier | OCN | Blocks | Share |
|---|---|---|---|
| ONVOY, LLCV - MI | 543C | 357 | 19.8% |
| MICHIGAN BELL TEL CO | 9323 | 265 | 14.7% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 163 | 9.1% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | 156 | 8.7% |
| PENINSULA FIBER NETWORK, LLC - MI | 116F | 138 | 7.7% |
| LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | 113 | 6.3% |
| ONVOY SPECTRUM, LLC | 624H | 78 | 4.3% |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 75 | 4.2% |
| AT&T CORP. | 516C | 47 | 2.6% |
| NIAGARA TEL. CO. | 0920 | 40 | 2.2% |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 37 | 2.1% |
| TELNET WORLDWIDE, INC. | 817J | 35 | 1.9% |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | 34 | 1.9% |
| RANGE TELECOMMUNICATIONS | 6695 | 30 | 1.7% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | 29 | 1.6% |
| 123.NET, LLC | 2550 | 25 | 1.4% |
| UPPER PENINSULA TEL. CO. | 0732 | 15 | 0.8% |
| BARAGA TELEPHONE COMPANY | 4253 | 14 | 0.8% |
| CHATHAM TEL. CO. | 0685 | 14 | 0.8% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | 14 | 0.8% |
| HIAWATHA TEL. CO. | 0713 | 11 | 0.6% |
| UPPER PENINSULA TELEPHONE COMPANY - MI | 746G | 11 | 0.6% |
| BORDERLAND COMMUNICATIONS, LLC - MI | 0030 | 10 | 0.6% |
| BRIGHTSPEED OF UPPER MICHIGAN, INC. | 0689 | 8 | 0.4% |
| NUSO, LLC | 732J | 8 | 0.4% |
97 rate centres. search them all.