| Date | IP Address |
| 2025-01-14 | 44.194.94.130 (ClassC) |
| 2025-01-18 | 3.224.176.3 (ClassC) |
| 2025-02-12 | 34.201.187.158 (ClassC) |
| 2025-03-24 | 34.230.167.38 (ClassC) |
| 2025-03-27 | 3.227.33.151 (ClassC) |
| 2025-04-18 | 18.204.157.129 (ClassC) |
| 2025-05-07 | 184.73.188.200 (ClassC) |
| 2025-06-01 | 52.207.46.121 (ClassC) |
| 2025-07-03 | 35.153.32.161 (ClassC) |
| 2025-07-23 | 34.225.74.68 (ClassC) |
| 2025-08-13 | 100.28.197.154 (ClassC) |
| 2025-09-03 | 44.199.170.134 (ClassC) |
| 2025-11-19 | 18.232.28.252 (ClassC) |
| Date | Domain | IP |
| v2.ellie.sharpen.prod.mheducation.com | 2025-09-08 | 3.33.204.205 |
| fred.api.sharpen.prod.mheducation.com | 2025-09-17 | 18.215.140.76 |
| libraengine.api.sharpen.prod.mheducation.com | 2025-10-21 | 98.85.174.66 |
| explore.api.sharpen.prod.mheducation.com | 2025-01-14 | 44.194.94.130 |
| user.api.sharpen.prod.mheducation.com | 2024-12-26 | 44.197.5.53 |
| payments.api.sharpen.prod.mheducation.com | 2024-12-26 | 3.233.193.73 |
| content.api.sharpen.prod.mheducation.com | 2025-01-14 | 3.83.186.143 |
| gateway.api.sharpen.prod.mheducation.com | 2025-09-19 | 76.223.21.218 |