| Department of Defence | Terrestrial Communication Services | A$1.3B | 2026-07-29 |
| Services Australia | Network Transformation Partner Services | A$65.7M | 2025-02-12 |
| CSIRO | Telstra Services Agreement | A$60.1M | 2025-10-10 |
| Services Australia | Network Telecommunication Services | A$41.3M | 2025-09-05 |
| Services Australia | Data Services | A$34.2M | 2026-05-20 |
| Department of Home Affairs | TIS National - Telephony Services | A$33.1M | 2025-12-09 |
| Department of Home Affairs | Secure Gateway Services | A$32.5M | 2026-06-26 |
| National Emergency Management Agency | National Messaging System Cell Broadcast Entity | A$22.6M | 2026-07-13 |