| Date | IP Address |
| 2020-04-23 | 23.10.248.51 (ClassC) |
| 2020-09-17 | 23.197.192.226 (ClassC) |
| 2023-06-03 | 23.213.203.75 (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) |
| 2024-06-18 | 99.84.77.195 (ClassC) |
| 2024-08-20 | 99.84.77.170 (ClassC) |
| 2025-01-05 | 108.138.97.222 (ClassC) |
| 2025-01-20 | 99.84.77.224 (ClassC) |
| Date | Domain | IP |
| support.postnet.com | 2024-08-31 | 44.210.250.122 |
| www.postnet.com | 2024-08-13 | 141.193.213.11 |
| sky.postnet.com | 2023-12-16 | 104.96.163.151 |