Michigan
Area codes
1
Rate centres
57
Carriers
54
Prefix blocks
3,381
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.
54 carriers hold blocks here. The 25 largest are shown.
| Carrier | OCN | Blocks | Share |
|---|---|---|---|
| ONVOY, LLCV - MI | 543C | 455 | 13.5% |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | 453 | 13.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | 403 | 11.9% |
| MICHIGAN BELL TEL CO | 9323 | 363 | 10.7% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 306 | 9.1% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7157 | 180 | 5.3% |
| ACD TELECOM, INC. - MI | 3535 | 158 | 4.7% |
| LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | 146 | 4.3% |
| ONVOY SPECTRUM, LLC | 624H | 90 | 2.7% |
| COMCAST IP PHONE, LLC | 318J | 87 | 2.6% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | 81 | 2.4% |
| METROPCS, INC. | 5562 | 66 | 2.0% |
| FRONTIER MIDSTATES, INC. - MI | 0681 | 52 | 1.5% |
| FRONTIER NORTH, INC. - MI | 0695 | 49 | 1.4% |
| TERRA NOVA TELECOM INC. | 145J | 40 | 1.2% |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 38 | 1.1% |
| BANDWIDTH.COM CLEC, LLC - MI | 991E | 34 | 1.0% |
| PAETEC ITEL, LLC | 829J | 32 | 0.9% |
| TELNET WORLDWIDE, INC. | 817J | 32 | 0.9% |
| AT&T CORP. | 516C | 29 | 0.9% |
| WOW! INTERNET, CABLE AND PHONE | 961J | 29 | 0.9% |
| 123.NET, LLC | 2550 | 27 | 0.8% |
| CLEAR RATE COMMUNICATIONS, LLC | 046L | 24 | 0.7% |
| COMMIO, LLC | 939H | 24 | 0.7% |
| SHIAWASSEE TEL. CO. | 0726 | 23 | 0.7% |
57 rate centres. search them all.