| Date | IP Address |
| 2024-12-26 | 3.233.193.73 (ClassC) |
| 2025-01-25 | 34.225.158.109 (ClassC) |
| 2025-02-25 | 34.193.255.201 (ClassC) |
| 2025-03-23 | 23.22.159.211 (ClassC) |
| 2025-04-19 | 34.201.85.162 (ClassC) |
| 2025-05-16 | 3.234.66.83 (ClassC) |
| 2025-07-22 | 34.192.20.136 (ClassC) |
| 2025-08-02 | 54.173.51.128 (ClassC) |
| 2025-08-12 | 34.237.252.66 (ClassC) |
| 2025-11-20 | 44.193.71.6 (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 |