| Date | IP Address |
| 2014-01-23 | 69.195.124.129 (ClassC) |
| 2024-05-07 | 162.241.252.197 (ClassC) |
| 2026-02-01 | 66.29.141.64 (ClassC) |
| Date | Domain | IP |
| initialcloudflare.harpsofherren.com | 2026-01-21 | 50.6.53.126 |
| autoconfig.harpsofherren.com | 2024-05-04 | 162.241.252.197 |
| autodiscover.harpsofherren.com | 2024-05-04 | 162.241.252.197 |