| Date | IP Address |
| 2025-01-18 | 45.60.0.92 (ClassC) |
| 2025-03-23 | 52.200.155.74 (ClassC) |
| 2025-04-20 | 52.206.190.114 (ClassC) |
| 2025-04-28 | 54.90.50.211 (ClassC) |
| 2025-06-16 | 54.83.242.212 (ClassC) |
| 2025-07-13 | 3.234.46.94 (ClassC) |
| 2025-07-21 | 107.23.214.37 (ClassC) |
| 2025-07-25 | 52.54.114.16 (ClassC) |
| 2025-07-31 | 18.214.141.240 (ClassC) |
| 2025-09-08 | 34.232.215.16 (ClassC) |
| 2025-10-14 | 35.168.51.252 (ClassC) |
| 2025-12-10 | 52.23.141.248 (ClassC) |
| 2026-03-07 | 3.225.103.102 (ClassC) |
| Date | Domain | IP |
| relayhub.us.pitneybowes.com | 2024-12-22 | 45.60.73.127 |
| client-mod.relayhub.us.pitneybowes.com | 2025-02-20 | 45.60.73.127 |
| client-demo.relayhub.us.pitneybowes.com | 2025-03-04 | 45.60.0.92 |
| services.relayhub.us.pitneybowes.com | 2025-02-22 | 45.60.0.92 |
| client.relayhub.us.pitneybowes.com | 2025-01-18 | 45.60.0.92 |
| sending.us.pitneybowes.com | 2019-08-14 | 13.226.101.102 |