| Date | IP Address |
| 2022-11-30 | 54.71.214.40 (ClassC) |
| 2023-08-11 | 44.225.47.96 (ClassC) |
| 2023-12-25 | 54.189.199.0 (ClassC) |
| 2024-05-12 | 100.21.125.212 (ClassC) |
| 2024-06-30 | 100.20.16.4 (ClassC) |
| 2024-07-27 | 52.35.3.116 (ClassC) |
| 2024-10-02 | 34.211.61.109 (ClassC) |
| 2024-10-03 | 44.224.0.234 (ClassC) |
| 2024-10-09 | 54.191.169.184 (ClassC) |
| 2024-10-16 | 44.241.125.238 (ClassC) |
| 2024-10-25 | 54.201.18.206 (ClassC) |
| 2024-11-09 | 44.224.237.157 (ClassC) |
| 2024-11-25 | 34.211.20.222 (ClassC) |
| 2024-12-30 | 35.167.34.93 (ClassC) |
| 2025-02-16 | 35.160.135.252 (ClassC) |
| 2025-02-26 | 54.71.148.246 (ClassC) |
| 2025-03-06 | 35.167.112.235 (ClassC) |
| 2025-04-21 | 54.189.227.135 (ClassC) |
| 2025-08-23 | 52.37.108.242 (ClassC) |
| 2025-08-29 | 34.217.237.6 (ClassC) |
| 2025-09-11 | 52.39.222.201 (ClassC) |
| 2025-12-06 | 54.201.36.100 (ClassC) |
| 2026-01-04 | 44.231.15.127 (ClassC) |
| Date | Domain | IP |
| it-notif1.postofficeweb.com | 2025-05-16 | 35.167.237.67 |
| it-notif2.postofficeweb.com | 2025-05-17 | 44.226.124.2 |
| ssl.postofficeweb.com | 2025-05-13 | 44.226.124.2 |
| acir.postofficeweb.com | 2023-08-04 | 54.212.125.192 |
| rnicrosoft.postofficeweb.com | 2025-05-10 | 52.40.20.182 |
| www.postofficeweb.com | 2023-08-09 | 52.36.111.89 |
| delivery.postofficeweb.com | 2025-07-13 | 35.164.28.101 |