| Telepathy AI | Florida |
| Telepathy, Inc. | |
| Telephone and Data Services, Inc. | Tennessee |
| Telephone and Data Systems, Inc. | Illinois |
| Telephone Electronics Corporation | Mississippi |
| Telephone Service Company | Ohio |
| Telephone Support Systems, Inc. | Michigan |
| Telephone Tools of Georgia | Georgia |
| TelephoNET Corporation | Maryland |
| Telephonetics | Florida |
| Telephonics Corporation | New York |
| Telephonix, Inc. | Pennsylvania |
| Telephony Depot, Inc. | Pennsylvania |
| Teleport | |
| Teleprime, Inc. | Illinois |
| TeleQ Network Solutions | Pennsylvania |
| Teleran Technologies, Inc. | New Jersey |
| Telesair, Inc. | California |
| TeleSense | California |
| TeleSign Corporation | California |
| Telesis Bio, Inc. | California |
| TeleSoft Partners | California |
| TeleSource | Illinois |
| TeleSpace, LLC | Texas |
| Telestream, LLC | California |
| Telesynergy Research, Inc. | California |
| teleSys Software, Inc. | California |
| Telesystem | Ohio |
| TeleTracker | Arizona |
| TeleTracking Technologies, Inc. | Pennsylvania |
| Teletronics International, Inc. | Maryland |
| TeleType Co., Inc. | Massachusetts |
| Televate | Virginia |
| Televate | |
| Televeda System, LLC | |
| Televero Behavioral Health | |
| Televersant, LLC | California |
| TeleVoice | Texas |
| TelExpress Live Store | North Carolina |
| Telgorithm | California |
| Teli Communications, LLC | North Carolina |
| TeliApp Corporation | New York |
| Teliax | Colorado |
| TeligentIP | Texas |
| Teligistics, Inc. | Texas |
| Telinc Corporation | Pennsylvania |
| Telinta, Inc. | New Jersey |
| Telios Pharma, Inc. | |
| Telit Cinterion | California |
| TeLKnowledge | |