Company Name
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| Ubiquity North Dakota, LLC |
| Uniti Fiber LLC |
| Unity Wireless, Inc. |
| USA Digital Communications, Inc. |
| USA Mobile LLC |
| USA T-1 Digital Communications, Inc |
| USIPCommunications, LLC |
| US South |
| U.S. South Communications, Inc. |
| U.S. South Communications, Inc. |
| U.S. Telecom Long Distance, Inc. fka Corporate Calling Services, Inc. |
| US Telepage, Inc. |
| UVNV, Inc. |