| Company | Now Known As | Street Address | Customer Contact No. |
|---|---|---|---|
| DCT Telecom Group, LLC | 1 Concourse Pkwy ne Ste 600 Atlanta, GA 30328-5534 | 888-404-4328 | |
| Delhi Telephone Company | 107 Main Street P.O. Box 271 Delhi, NY 13753 | 607-746-1500 | |
| DeltaCom, LLC | 4005 North Rodney Parham Road Little Rock, AR 72212 | 855-352-2731 | |
| Deposit Telephone Company, Inc. | 525 Junction Road Madison, WI 53717 | 888-225-5837 | |
| Development Authority of the North Country | 317 Washington Street Watertown, NY 13601 | 866-669-3262 | |
| DFT Local Service Corporation d/b/a DFT Select One | 40 Temple St PO BOX 209 Fredonia, NY 14063 | 716-673-3000 | |
| Dial World Communications, LLC | 30591 Longhorn Drive Canyon Lake, CA 92587-7648 | 855-800-4562 | |
| Discount Long Distance, LLC | 10161 Park Run Drive Suite 231 Las Vegas, NV 89145 | 952-401-0681 | |
| DSCI, LLC | 5950 Canoga Avenue Suite 350 Woodland Hills, CA 91367 | 877-487-8722 | |
| DTC Cable Inc. d/b/a Delhi Long Distance | 107 Main Street P.O. Box 271 Delhi, NY 13753 | 607-746-1500 | |
| Dunkirk and Fredonia Telephone Company | 40 Temple St PO BOX 209 Fredonia, NY 14063 | 716-673-3000 | |
| EarthGrid PBC | 2625 Alcatraz Avenue Suite 111 Berkeley, CA 94705 | 415-200-3438 | |
| Easton Telecom Services, L.L.C | 3046 Brecksville Rd Summit II Suite A Richfield, OH 44286 | 800-222-8122 | |