| Date | IP Address |
| 2024-01-22 | 23.205.110.141 (ClassC) |
| 2024-08-02 | 23.213.53.13 (ClassC) |
| 2024-08-02 | 23.213.53.41 (ClassC) |
| 2025-05-23 | 23.195.81.144 (ClassC) |
| 2025-07-08 | 23.192.230.152 (ClassC) |
| 2025-09-14 | 23.192.230.156 (ClassC) |
| Date | Domain | IP |
| a.pennfoster.com | 2025-07-13 | 104.18.22.22 |
| bemore.pennfoster.com | 2025-07-08 | 23.192.230.152 |
| mbiq.pennfoster.com | 2014-05-10 | 198.47.108.56 |
| assignments.pennfoster.com | 2023-08-16 | 104.18.184.103 |
| www.pennfoster.com | 2025-03-15 | 104.16.37.61 |
| unix.pennfoster.com | 2023-08-25 | 20.14.228.93 |
| my.pennfoster.com | 2025-04-22 | 104.16.38.61 |