Michigan
Area codes
4
Rate centres
218
Carriers
78
Prefix blocks
12,033
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.
78 carriers hold blocks here. The 25 largest are shown.
| Carrier | OCN | Blocks | Share |
|---|---|---|---|
| ONVOY, LLCV - MI | 543C | 1,758 | 14.6% |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | 1,546 | 12.8% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 1,469 | 12.2% |
| MICHIGAN BELL TEL CO | 9323 | 1,109 | 9.2% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | 934 | 7.8% |
| BANDWIDTH.COM CLEC, LLC - MI | 991E | 607 | 5.0% |
| LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | 515 | 4.3% |
| FRONTIER NORTH, INC. - MI | 0695 | 513 | 4.3% |
| ONVOY SPECTRUM, LLC | 624H | 313 | 2.6% |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 257 | 2.1% |
| PAETEC ITEL, LLC | 829J | 249 | 2.1% |
| PEERLESS NETWORK OF MICHIGAN, LLC - MI | 933G | 239 | 2.0% |
| COMCAST IP PHONE, LLC | 318J | 235 | 2.0% |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 223 | 1.9% |
| METROPCS, INC. | 5562 | 221 | 1.8% |
| ACD TELECOM, INC. - MI | 3535 | 193 | 1.6% |
| TELNET WORLDWIDE, INC. | 817J | 172 | 1.4% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7157 | 169 | 1.4% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | 150 | 1.2% |
| AT&T CORP. | 516C | 122 | 1.0% |
| 123.NET, LLC | 2550 | 120 | 1.0% |
| TERRA NOVA TELECOM INC. | 145J | 112 | 0.9% |
| TON80 COMMUNICATIONS, LLC | 516J | 90 | 0.7% |
| FRACTEL, LLC | 965H | 54 | 0.4% |
| BOOST SUBSCRIBERCO L.L.C. | 490J | 53 | 0.4% |
218 rate centres. search them all.