| Date | IP Address |
| 2021-05-10 | 23.198.6.15 (ClassC) |
| 2021-05-10 | 23.198.6.27 (ClassC) |
| 2021-09-20 | 104.125.2.144 (ClassC) |
| 2021-10-26 | 104.119.189.161 (ClassC) |
| 2022-02-25 | 23.54.76.136 (ClassC) |
| 2022-03-14 | 23.42.158.177 (ClassC) |
| 2022-03-14 | 23.42.159.26 (ClassC) |
| 2023-01-23 | 184.31.1.97 (ClassC) |
| 2024-08-12 | 23.216.145.24 (ClassC) |
| 2024-08-31 | 23.54.19.16 (ClassC) |
| 2024-12-06 | 104.18.19.75 (ClassC) |
| 2024-12-20 | 104.18.18.75 (ClassC) |
| 2025-08-01 | 13.65.94.204 (ClassC) |
| Date | Domain | IP |
| f.northerntoolemail.com | 2024-07-04 | 23.216.145.13 |
| i.northerntoolemail.com | 2023-07-20 | 23.49.3.64 |
| ebm.northerntoolemail.com | 2024-08-12 | 23.216.145.24 |