| Date | IP Address |
| 2020-12-02 | 52.6.235.5 (ClassC) |
| 2024-09-16 | 54.197.244.216 (ClassC) |
| 2024-10-25 | 54.80.252.224 (ClassC) |
| 2024-11-03 | 3.231.134.169 (ClassC) |
| Date | Domain | IP |
| mail11.building-files.com | 2024-07-27 | 54.152.215.42 |
| server1.building-files.com | 2024-08-18 | 52.86.86.21 |
| mx1.building-files.com | 2024-09-03 | 54.164.66.214 |
| mail02.building-files.com | 2024-09-26 | 54.162.153.99 |
| ns2.building-files.com | 2024-09-08 | 52.73.237.112 |
| mail5.building-files.com | 2024-08-07 | 54.163.86.153 |
| home.building-files.com | 2024-09-06 | 52.73.15.68 |
| comune.building-files.com | 2024-09-14 | 52.87.93.61 |
| mail.comune.building-files.com | 2024-09-19 | 54.165.96.145 |
| gate.building-files.com | 2024-09-16 | 54.197.244.216 |
| email.building-files.com | 2024-09-09 | 54.174.185.134 |
| outmail.building-files.com | 2024-09-18 | 54.161.181.38 |
| zmail.building-files.com | 2024-09-20 | 54.165.96.145 |
| spam.building-files.com | 2024-08-28 | 54.146.3.211 |
| mxs.building-files.com | 2024-08-07 | 54.163.86.153 |