| Date | IP Address |
| 2014-07-14 | 64.145.86.25 (ClassC) |
| 2014-11-17 | 165.254.206.185 (ClassC) |
| 2015-01-19 | 165.254.206.80 (ClassC) |
| 2015-01-31 | 184.27.202.75 (ClassC) |
| 2015-02-03 | 165.254.206.130 (ClassC) |
| 2024-02-13 | 23.213.175.195 (ClassC) |
| 2024-02-17 | 23.213.175.193 (ClassC) |
| 2024-02-25 | 23.32.75.18 (ClassC) |
| 2024-02-28 | 23.44.205.192 (ClassC) |
| 2024-03-02 | 23.53.122.140 (ClassC) |
| 2024-03-14 | 23.32.75.30 (ClassC) |
| 2024-09-04 | 23.32.75.24 (ClassC) |
| 2024-09-10 | 23.213.34.153 (ClassC) |
| 2024-11-05 | 23.32.75.8 (ClassC) |
| Date | Domain | IP |
| manual.pfaff.com | 2024-10-05 | 18.238.217.104 |
| image.emails.pfaff.com | 2014-07-14 | 64.145.86.25 |
| dev.pfaff.com | 2024-09-19 | 23.227.38.74 |