| Company | Status | Now Known As | Street Address | Customer Contact No. | |
|---|---|---|---|---|---|
| U S West Interprise America, Inc. | Ceased Operations | ||||
| U S West Long Distance, Inc. | Ceased Operations | ||||
| UA-Columbia Cablevision of Westchester | Ceased Operations | ||||
| UCN, Inc. | Ceased Operations | inContact, Inc. d/b/a UCN, Inc. | 7730 South Union Park Avenue Suite 500 Midvale, UT 84047 | ||
| UKI Communications, Inc. | Ceased Operations | ||||
| Uni-Tel Communications Group, Inc. | Ceased Operations | 55 S. Main Street #304 Naperville, IL 60540 | |||
| Unicall Communications Inc. | Ceased Operations | ||||
| Unicom Network Communications , Inc. | Ceased Operations | ||||
| Unidial Communications, Inc. | Ceased Operations | ||||
| UniDial Telecommunications, LLC | Ceased Operations | ||||
| Unidial, Incorporated | Ceased Operations | ||||
| UniPlex Telecom Technologies, Inc. | Ceased Operations | ||||
| Unisource Communications Inc. | Ceased Operations | ||||
| United American Technology, Inc. | Ceased Operations | 900 NE 6t3rd Oklahoma, OK 73105 | |||
| United Business Communications | Ceased Operations | ||||
| United Communications HUB, Inc. | Ceased Operations | ||||
| United Communications Systems, Inc. | Ceased Operations | dba Call One | 500 West Madison Street Suite 411 Chicago, IL 60661 | ||
| United Federal Data of New York, LLC | Active | 210 York Street Suite 200 York, PA 17403 | 855-255-5244 | ||
| United Federal Data, LLC | Ceased Operations | 30 North Queen Street 2nd & 3rd Floor Lancaster , Pennsylvania 17603 | |||
| United Services Telephone, LLC. | Ceased Operations | ||||
| United States Advanced Network, Inc. | Ceased Operations | ||||
| United States Telecommunications, Inc. | Ceased Operations | ||||
| United Systems Access Telecom, Inc. | Ceased Operations | United Systems Access Telecom, Inc. 5 Bragdon Lane , Kennebunk ME 04043 | |||
| United Technological Systems, Inc. | Ceased Operations | ||||
| United Telecom Of America, Inc. | Ceased Operations | ||||
| United Telecom, Inc. d/b/a Rodeo Telecom | Inactive | 3550 Wilshire Blvd. 17th. Floor Los Angeles, CA 90010 | |||
| United Telecom, LLC | Ceased Operations | 175 Great Neck Road Suite 404 Great Neck, New York 11021 | |||
| United Telemanagement Services, Inc. | Ceased Operations | ||||
| United Telemanagement Systems, Inc. | Ceased Operations | ||||
| United Video | Ceased Operations | ||||
| United Wats, Inc. | Ceased Operations | ||||
| Unitel Business Network, Inc. | Ceased Operations | ||||
| Uniti National LLC | Active | 2101 Riverfront Drive Suite A Little Rock, AR 72202 | 501-951-0462 | ||
| Univance Telecommunications, Inc.* | Ceased Operations | ||||
| Universal Access, Inc. | Ceased Operations | 200 South Wacker Drive Suite 1200 Chicago, IL 60606 | |||
| UNIVERSAL CARRIERS, Inc. | Ceased Operations | ||||
| Universal Communication Telecom Services, Inc. | Inactive | One Penn Plaza, suite 6241 New York, NY 10119 | |||
| Universal Communications Network, Inc. | Ceased Operations | UCN | |||
| Universal Connectivity, Inc. | Ceased Operations | ||||
| Universal LEC, LLC | Inactive | , NY 12207 | |||
| Universal Network Connections | Ceased Operations | na | 4914 West Genesee Street Camillus, NY 13031 | ||
| Universal Tele-Cable Corp. | Ceased Operations | ||||
| Universal Telecommunications, Inc. | Ceased Operations | ||||
| Universal Telephone & Telegraph, Inc. | Ceased Operations | ||||
| Universal Telephone & Telegraph, LLC | Ceased Operations | ||||
| Upstate Cellular Partnership* | Ceased Operations | ||||
| Upstate Hometel, L.L.C. | Ceased Operations | ||||
| Urban Communications Transport Corporation | Ceased Operations | ||||
| Urban Communications Transport Corp. | Ceased Operations | 369 East 149th Street 7 Fl Bronx, NY 10455 | |||
| Urban Media of New York, Inc. | Ceased Operations | ||||
| UrbanNet of New York, Inc. | Ceased Operations | ||||
| US Cable of Evangola | Ceased Operations | ||||
| US Cable of Tri-County, Ltd. | Ceased Operations | ||||
| US Datanet Corporation | Ceased Operations | USA Datanet | 318 South Clinton Street Suite 502 Syracuse, NY 13202 | ||
| US Datanet Corporation d/b/a USD Clec, Inc. | Ceased Operations | Warwick Valley Mobile Telephone Company, Inc. dba WVT Business Communications | |||
| US Fibercom, Inc. | Ceased Operations | ||||
| US Intertel Corp. | Ceased Operations | ||||
| US LEC Communications, Inc. d/b/a Paetec Business Services | Ceased Operations | US LEC Communications LLC | 4001 N Rodney Parham Rd Little Rock, AR 72212 | ||
| US LEC Communications, Inc. d/b/a Paetec Business Services | Ceased Operations | US LEC Communications LLC | 600 Willowbrook Office Park Fairport, NY 14450 | ||
| US LEC Communications, LLC | Active | 4005 North Rodney Parham Road Little Rock, AR 72212 | 855-352-2731 | ||
| US Mobile Services, Inc. | Ceased Operations | ||||
| US One Communications of New York, Inc. | Ceased Operations | ||||
| US Osiris Corporation | Ceased Operations | ||||
| US Signal Company, LLC | Active | 201 Ionia Ave SW Grand Rapids, MI 49503 | 866-274-4625 | ||
| US Sprint Communications Company* | Ceased Operations | ||||
| US Talk Cheap.Com, LLC | Ceased Operations | ||||
| US WATS, Inc. | Ceased Operations | ||||
| US West Media Group | Ceased Operations | ||||
| USA Calling, Inc. | Ceased Operations | ||||
| USA Datanet Wholesale, Inc. | Ceased Operations | ||||
| USA Digital Communications, Inc. | Active | 11600 Broadway Extension Suite 150 Oklahoma City, OK 73114 | 888-872-3787 | ||
| USA EASY PHONE INC., d/b/a Choice One Telecom | Ceased Operations | 1510 n.e 162 street miami, fl 33162 | |||
| USA eXchange, LLC | Ceased Operations | Omniplex Communications Group | |||
| USA Global Links, Inc. | Ceased Operations | ||||
| USA Phone 1 | Ceased Operations | ||||
| USA Tele Corp. | Ceased Operations | ||||
| USBG, Inc. | Ceased Operations | ||||
| USD CLEC, Inc. | Ceased Operations | 318 South Clinton Street NA NA Syracuse, NY 13202 | |||
| User Centric Communications, Inc | Ceased Operations | User Centric, Inc. | 1505 Gates Avenue #2R Brooklyn, NY 11237 | ||
| User Centric, Inc | Ceased Operations | 1505 Gates Avenue 2R Brooklyn, NY 11237 | |||
| USFI, Inc. | Ceased Operations | ||||
| USLD Communications, Inc. | Ceased Operations | ||||
| USN Communications Long Distance, Inc. | Ceased Operations | ||||
| USN Communications Northeast, Inc | Ceased Operations | ||||
| USN Telecommunications Company | Ceased Operations | ||||
| USTeleCenters | Ceased Operations | ||||
| UStel, Inc. | Ceased Operations | USTL | |||
| USX Consultants, Inc. | Ceased Operations | ||||
| Utica Telephone Company* | Ceased Operations | ||||
| Utilicore Corporation | Ceased Operations | ||||
| UtiliSave, LLC. | Ceased Operations | ||||
| Utility Solutions | Ceased Operations | 1175 S. Plymouth Avenue Rochester, NY 14611 | |||
| Utility.com, Inc. | Ceased Operations | ||||
| U.S. TelePacific Corporation dba TelePacific Communications | Ceased Operations | ||||
| U.S. Cablevision | Ceased Operations | ||||
| U.S. Digital Network Limited Partnership | Ceased Operations | ||||
| U.S. Fibercom Network, Inc.* | Ceased Operations | ||||
| U.S. Long Distance, Inc. | Ceased Operations | ||||
| U.S. Network Services, Inc. | Ceased Operations | ||||
| U.S. Operators, Inc. | Ceased Operations | ||||
| U.S. OPERATORS, Inc. | Ceased Operations | ||||
| U.S. Republic Communications, Inc. | Ceased Operations | ||||
| U.S. South Communications, Inc. | Active | 250 Williams Street Suite M100 Atlanta, GA 30303 | 800-427-0643 | ||
| U.S. Telco, Inc. | Inactive | ||||
| U.S. Tele-Comm Inc. dba American Payphone & Technology | Ceased Operations | ||||
| U.S. Telecom Long Distance, Inc. | Ceased Operations | Inapplicable | 3960 Howard Hughes Parkway 5th Floor, #5001F Las Vegas, Nevada 89109 | ||
| U.S. Telecom Long Distance, Inc. d/b/a L.D. Discount Plan | Active | 3960 Howard Hughes Parkway Ste 5001F Las Vegas, NV 89169 | 888-299-6618 | ||