| Eagle Telephone System Inc. | Eagle Telephone Systems, Inc. | Richland, OR | Active |
| Eagle Valley Tel. Co. | Eagle Valley Telephone Company | Perham, MN | Active |
| East Ascension Telephone Co., L.L.C. | East Ascension Telephone Co. LLC | Gonzales, LA | Active |
| East Buchanan Tel. Cooperative | East Buchanan Telephone Cooperative | Winthrop, IA | Active |
| East Otter Tail Tel. Co. | East Otter Tail Telephone Company | Perham, MN | Active |
| East Plains Telecom, Inc. | - | Baltic, SD | Inactive |
| EastCoast Telecom, Inc. | TDS Telecom | Madison, WI | Active |
| Eastern Nebraska Tel. Co. | Eastern Nebraska Telephone Co. | Blair, NE | Active |
| Eastern Slope Rural Tel. Assn. Inc. | Eastern Slope Rural Telephone Assoc., Inc. | Hugo, CO | Active |
| Eastex Tel. Coop. Inc. | Eastex Telephone Cooperative, Inc. | Henderson, TX | Active |
| Easton Tel. Co. | BEVCOMM | Blue Earth, MN | Active |
| Eckles Tel. Co. | Eckles Telephone Company | Blue Earth, MN | Active |
| Edwards Telephone Co., Inc. | TDS Telecom | Madison, WI | Active |
| Egyptian Tel. Coop. Assn. | Egyptian Telephone Coop. Assoc. | Steeleville, IL | Active |
| El Paso County Telephone Company | The El Paso County Telephone Company | Monroe, LA | Active |
| Electra Telephone Company | - | Medicine Park, OK | Active |
| Elizabeth Telephone Company, LLC | - | Sulphur, LA | Active |
| Elkhart Telephone Company, Inc | Elkhart Telephone Company, Inc. | Elkhart, KS | Active |
| Ellerbe Telephone Company | - | Wilkesboro, NC | Active |
| Ellijay Telephone Company | - | Ellijay, GA | Active |
| Ellington Telephone Company | - | Ellington, MO | Active |
| Ellsworth Coop. Tel. Assn. | Ellsworth Cooperative Telephone Association | Ellsworth, IA | Active |
| Elsie Communications | Elsie Communications, Inc. | Colorado City, CO | Active |
| Embarq Corporation | - | Monroe, LA | Active |
| Emery Telephone | Emery Telecom | Orangeville, UT | Active |
| Emily Coop. Tel. Co. | Emily Cooperative Telephone Company | Emily, MN | Active |
| Empire Tel. Corp. | Empire Telephone Company | Prattsburgh, NY | Active |
| Etex Telephone Coop., Inc. | ETEX Telephone Coop., Inc. | Gilmer, TX | Active |
| Eustis Telephone Exchange, Inc. | Eustis Acquisition Company | Lincoln, NE | Inactive |
| F & B Communications, Inc. | F & B Communications | Wheatland, IA | Active |
| FMTC-I35, Inc | - | Nora Springs, IA | Active |
| FMTC-SWT, Inc. | - | Nora Springs, IA | Active |
| Farber Telephone Company | - | Farber, MO | Active |
| Farmers & Merchants Mutual Tel. Co. | Farmers & Merchants Mutual Telephone Company | Wayland, IA | Active |
| Farmers Coop. Tel. Co. | Farmers Cooperative Telephone Company | Dysart, IA | Active |
| Farmers Independent Tel. Co. | Farmers Independent Telephone Co. | Grantsburg, WI | Active |
| Farmers Mutual Coop. Tel. Co. - Harlan | Farmers Mutual Cooperative Telephone Company | Harlan, IA | Active |
| Farmers Mutual Cooperative Telephone Company, Inc. | Farmers Mutual Cooperative Telephone Company | Moulton, IA | Active |
| Farmers Mutual Tel. Co. | Farmers Mutual Telephone Company | Bellingham, MN | Active |
| Farmers Mutual Tel. Co. | Farmers Mutual Telephone Company, Inc. | Fruitland, ID | Active |
| Farmers Mutual Tel. Co. - Shellsburg | Farmers Mutual Telephone Coop. | Shellsburg, IA | Active |
| Farmers Mutual Telephone Company | - | Nora Springs, IA | Active |
| Farmers Mutual Telephone Company | - | Jesup, IA | Active |
| Farmers Mutual of Chapin DBA Chapin Telephone Co. | Chapin Telephone Company | Elsie, MI | Active |
| Farmers Tel. Co. Inc. | Farmers Telephone Company, Inc. | Pleasant View, CO | Active |
| Farmers Telephone Company | Farmers Telephone Company (IA) | Essex, IA | Active |
| Farmers Telephone Company - Riceville | Omni Tel Communications | Nora Springs, IA | Active |
| Farmers Telephone Cooperative | Farmers Telephone Cooperative, Inc. | Kingstree, SC | Active |
| Federated Tel. Coop. | Federated Telephone Cooperative | Chokio, MN | Active |
| Federated Utilities dba Hancock Telephone Co. | Federated Utilities, Inc. | Chokio, MN | Inactive |