| Date | IP Address |
| 2020-04-23 | 23.10.248.51 (ClassC) |
| 2020-09-17 | 23.197.192.226 (ClassC) |
| 2020-10-01 | 104.124.56.155 (ClassC) |
| 2023-06-03 | 23.213.203.75 (ClassC) |
| 2023-08-25 | 23.202.90.135 (ClassC) |
| 2023-09-29 | 23.1.33.215 (ClassC) |
| 2023-09-29 | 23.47.204.155 (ClassC) |
| 2023-09-29 | 23.194.116.7 (ClassC) |
| 2023-12-16 | 104.96.163.151 (ClassC) |
| 2024-02-09 | 184.28.93.11 (ClassC) |
| 2024-04-20 | 104.71.218.99 (ClassC) |
| 2024-06-18 | 99.84.77.195 (ClassC) |
| 2024-07-03 | 99.84.102.12 (ClassC) |
| 2024-08-20 | 99.84.77.170 (ClassC) |
| 2024-10-03 | 13.32.153.32 (ClassC) |
| 2025-01-05 | 108.138.97.222 (ClassC) |
| 2025-01-20 | 99.84.77.224 (ClassC) |
| 2025-04-14 | 99.84.78.49 (ClassC) |
| 2025-07-13 | 3.175.37.119 (ClassC) |
| 2025-08-08 | 3.175.30.217 (ClassC) |
| 2025-09-27 | 54.192.9.115 (ClassC) |
| 2025-10-13 | 3.175.33.102 (ClassC) |
| 2026-03-05 | 3.175.36.120 (ClassC) |
| Date | Domain | IP |
| locations.postnet.com | 2025-03-04 | 104.16.219.185 |
| support.postnet.com | 2024-08-31 | 44.210.250.122 |
| www.postnet.com | 2025-09-13 | 141.193.213.10 |
| sky.postnet.com | 2023-12-16 | 104.96.163.151 |