| Date | IP Address |
| 2015-03-01 | 54.230.6.160 (ClassC) |
| 2015-03-17 | 205.251.253.100 (ClassC) |
| 2015-06-18 | 54.192.91.230 (ClassC) |
| 2015-07-27 | 54.230.88.41 (ClassC) |
| 2015-08-26 | 205.251.253.175 (ClassC) |
| 2016-04-25 | 54.230.141.151 (ClassC) |
| 2017-11-07 | 52.85.62.64 (ClassC) |
| 2019-11-10 | 13.225.54.88 (ClassC) |
| 2020-06-03 | 13.226.138.74 (ClassC) |
| 2020-06-03 | 13.226.138.84 (ClassC) |
| 2020-10-08 | 13.249.178.82 (ClassC) |
| 2021-07-29 | 13.249.126.73 (ClassC) |
| 2021-09-13 | 204.246.178.94 (ClassC) |
| 2021-12-20 | 108.138.233.95 (ClassC) |
| 2022-01-05 | 65.9.83.17 (ClassC) |
| 2022-01-09 | 13.227.219.19 (ClassC) |
| 2022-01-31 | 65.9.78.24 (ClassC) |
| 2022-02-07 | 18.65.229.42 (ClassC) |
| 2022-02-08 | 54.240.168.32 (ClassC) |
| 2024-03-22 | 18.161.6.73 (ClassC) |
| 2024-05-17 | 18.65.229.117 (ClassC) |
| 2024-07-26 | 18.161.6.23 (ClassC) |
| 2024-08-14 | 13.227.74.61 (ClassC) |
| 2024-09-24 | 18.161.6.124 (ClassC) |
| 2024-11-05 | 18.161.6.60 (ClassC) |
| Date | Domain | IP |
| coral-sim.zybooks.com | 2024-08-21 | 18.161.6.56 |
| admin.zybooks.com | 2024-10-25 | 18.161.6.76 |
| learn.zybooks.com | 2023-07-20 | 3.163.24.47 |
| static-resources.zybooks.com | 2024-07-07 | 204.246.191.100 |
| zytools.zybooks.com | 2015-03-01 | 54.230.6.160 |
| programming-submissions.zybooks.com | 2024-05-13 | 3.163.24.72 |
| exports.zybooks.com | 2024-05-15 | 99.84.66.49 |
| www.zybooks.com | 2024-07-17 | 141.193.213.11 |
| mathjax.zybooks.com | 2024-03-12 | 3.163.165.70 |
| legacy.zybooks.com | 2024-07-26 | 204.246.191.31 |