| Date | IP Address |
| 2016-07-22 | 67.135.105.208 (ClassC) |
| 2018-03-23 | 204.93.46.139 (ClassC) |
| 2018-03-23 | 204.93.46.57 (ClassC) |
| 2018-05-01 | 63.227.135.41 (ClassC) |
| 2018-05-03 | 96.16.6.9 (ClassC) |
| 2018-08-05 | 2.20.188.162 (ClassC) |
| 2018-08-25 | 2.22.52.74 (ClassC) |
| 2018-10-11 | 23.48.208.176 (ClassC) |
| 2018-10-11 | 23.48.208.202 (ClassC) |
| 2018-10-30 | 23.72.82.34 (ClassC) |
| 2019-04-11 | 23.215.98.51 (ClassC) |
| 2019-04-18 | 184.50.238.131 (ClassC) |
| 2020-04-15 | 104.124.10.171 (ClassC) |
| 2020-05-09 | 23.54.162.178 (ClassC) |
| 2025-05-10 | 104.18.38.233 (ClassC) |
| 2025-08-03 | 172.64.149.23 (ClassC) |
| Date | Domain | IP |
| auth.proquestk12.com | 2025-06-23 | 165.215.204.84 |
| www.proquestk12.com | 2025-05-10 | 104.18.38.233 |