| Company | Now Known As | Last Known Street Address | |
|---|---|---|---|
| U S West Interprise America, Inc. | |||
| U S West Long Distance, Inc. | |||
| UA-Columbia Cablevision of Westchester | |||
| UCN, Inc. | inContact, Inc. d/b/a UCN, Inc. | 7730 South Union Park Avenue Suite 500 Midvale UT 84047 | |
| UKI Communications, Inc. | |||
| Uni-Tel Communications Group, Inc. | 55 S. Main Street #304 Naperville IL 60540 | ||
| Unicall Communications Inc. | |||
| Unicom Network Communications , Inc. | |||
| Unidial Communications, Inc. | |||
| UniDial Telecommunications, LLC | |||
| Unidial, Incorporated | |||
| UniPlex Telecom Technologies, Inc. | |||
| Unisource Communications Inc. | |||
| United American Technology, Inc. | 900 NE 6t3rd Oklahoma OK 73105 | ||
| United Business Communications | |||
| United Communications HUB, Inc. | |||
| United Communications Systems, Inc. | dba Call One | 500 West Madison Street Suite 411 Chicago IL 60661 | |
| United Federal Data, LLC | 30 North Queen Street 2nd & 3rd Floor Lancaster Pennsylvania 17603 | ||
| United Services Telephone, LLC. | |||
| United States Advanced Network, Inc. | |||
| United States Telecommunications, Inc. | |||
| United Systems Access Telecom, Inc. | United Systems Access Telecom, Inc. 5 Bragdon Lane Kennebunk ME 04043 | ||
| United Technological Systems, Inc. | |||
| United Telecom Of America, Inc. | |||
| United Telecom, LLC | 175 Great Neck Road Suite 404 Great Neck New York 11021 | ||
| United Telemanagement Services, Inc. | |||
| United Telemanagement Systems, Inc. | |||
| United Video | |||
| United Wats, Inc. | |||
| Unitel Business Network, Inc. | |||
| Univance Telecommunications, Inc.* | |||
| Universal Access, Inc. | 200 South Wacker Drive Suite 1200 Chicago IL 60606 | ||
| UNIVERSAL CARRIERS, Inc. | |||
| Universal Communications Network, Inc. | UCN | ||
| Universal Connectivity, Inc. | |||
| Universal Network Connections | na | 4914 West Genesee Street Camillus NY 13031 | |
| Universal Tele-Cable Corp. | |||
| Universal Telecommunications, Inc. | |||
| Universal Telephone & Telegraph, Inc. | |||
| Universal Telephone & Telegraph, LLC | |||
| Upstate Cellular Partnership* | |||
| Upstate Hometel, L.L.C. | |||
| Urban Communications Transport Corporation | |||
| Urban Communications Transport Corp. | 369 East 149th Street 7 Fl Bronx NY 10455 | ||
| Urban Media of New York, Inc. | |||
| UrbanNet of New York, Inc. | |||
| US Cable of Evangola | |||
| US Cable of Tri-County, Ltd. | |||
| US Datanet Corporation | USA Datanet | 318 South Clinton Street Suite 502 Syracuse NY 13202 | |
| US Datanet Corporation d/b/a USD Clec, Inc. | Warwick Valley Mobile Telephone Company, Inc. dba WVT Business Communications | ||
| US Fibercom, Inc. | |||
| US Intertel Corp. | |||
| US LEC Communications, Inc. d/b/a Paetec Business Services | US LEC Communications LLC | 4001 N Rodney Parham Rd Little Rock AR 72212 | |
| US LEC Communications, Inc. d/b/a Paetec Business Services | US LEC Communications LLC | 600 Willowbrook Office Park Fairport NY 14450 | |
| US Mobile Services, Inc. | |||
| US One Communications of New York, Inc. | |||
| US Osiris Corporation | |||
| US Sprint Communications Company* | |||
| US Talk Cheap.Com, LLC | |||
| US WATS, Inc. | |||
| US West Media Group | |||
| USA Calling, Inc. | |||
| USA Datanet Wholesale, Inc. | |||
| USA EASY PHONE INC., d/b/a Choice One Telecom | 1510 n.e 162 street miami fl 33162 | ||
| USA eXchange, LLC | Omniplex Communications Group | ||
| USA Global Links, Inc. | |||
| USA Phone 1 | |||
| USA Tele Corp. | |||
| USBG, Inc. | |||
| USD CLEC, Inc. | 318 South Clinton Street NA NA Syracuse NY 13202 | ||
| User Centric Communications, Inc | User Centric, Inc. | 1505 Gates Avenue #2R Brooklyn NY 11237 | |
| User Centric, Inc | 1505 Gates Avenue 2R Brooklyn NY 11237 | ||
| USFI, Inc. | |||
| USLD Communications, Inc. | |||
| USN Communications Long Distance, Inc. | |||
| USN Communications Northeast, Inc | |||
| USN Telecommunications Company | |||
| USTeleCenters | |||
| UStel, Inc. | USTL | ||
| USX Consultants, Inc. | |||
| Utica Telephone Company* | |||
| Utilicore Corporation | |||
| UtiliSave, LLC. | |||
| Utility Solutions | 1175 S. Plymouth Avenue Rochester NY 14611 | ||
| Utility.com, Inc. | |||
| U.S. TelePacific Corporation dba TelePacific Communications | |||
| U.S. Cablevision | |||
| U.S. Digital Network Limited Partnership | |||
| U.S. Fibercom Network, Inc.* | |||
| U.S. Long Distance, Inc. | |||
| U.S. Network Services, Inc. | |||
| U.S. Operators, Inc. | |||
| U.S. OPERATORS, Inc. | |||
| U.S. Republic Communications, Inc. | |||
| U.S. Tele-Comm Inc. dba American Payphone & Technology | |||
| U.S. Telecom Long Distance, Inc. | Inapplicable | 3960 Howard Hughes Parkway 5th Floor, #5001F Las Vegas Nevada 89109 | |