| Date | IP Address |
| 2023-12-02 | 23.1.33.41 (ClassC) |
| 2025-02-01 | 23.46.228.169 (ClassC) |
| 2025-03-28 | 23.46.228.173 (ClassC) |
| Date | Domain | IP |
| smtp365.psr.gov.au | 2025-03-19 | 161.146.231.30 |
| www.exchange.psr.gov.au | 2025-03-20 | 161.146.231.35 |
| autodiscover.psr.gov.au | 2025-02-23 | 52.96.113.232 |
| www.psr.gov.au | 2025-02-01 | 23.46.228.169 |