Idaho, Montana, Washington
Area codes
4
Rate centres
42
Carriers
50
Prefix blocks
1,704
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.
50 carriers hold blocks here. The 25 largest are shown.
| Carrier | OCN | Blocks | Share |
|---|---|---|---|
| ONVOY, LLC - ID | 689F | 397 | 23.3% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | 255 | 15.0% |
| ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4321 | 164 | 9.6% |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 140 | 8.2% |
| T-MOBILE USA, INC. | 6529 | 74 | 4.3% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | 56 | 3.3% |
| LEVEL 3 COMMUNICATIONS, LLC - ID | 7558 | 55 | 3.2% |
| ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4324 | 53 | 3.1% |
| TELNYX LLC | 073H | 52 | 3.1% |
| ONVOY SPECTRUM, LLC | 624H | 47 | 2.8% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | 30 | 1.8% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 29 | 1.7% |
| TWC IP ENABLED SERVICES, LLC | 793K | 28 | 1.6% |
| IP HORIZON LLC | 515J | 27 | 1.6% |
| ONVOY, LLC - MT | 453F | 26 | 1.5% |
| FRACTEL, LLC | 965H | 24 | 1.4% |
| ONVOY, LLC - WA | 483E | 23 | 1.3% |
| PEND OREILLE TELEPHONE COMPANY | 2418 | 23 | 1.3% |
| TERRA NOVA TELECOM INC. | 145J | 21 | 1.2% |
| ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER | 4322 | 21 | 1.2% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 6564 | 20 | 1.2% |
| INLAND CELLULAR LLC | 1484 | 20 | 1.2% |
| METROPCS, INC. | 5562 | 18 | 1.1% |
| COMMIO, LLC | 939H | 14 | 0.8% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - ID | 808G | 13 | 0.8% |
42 rate centres. search them all.