| 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 | 13.226.138.84 (ClassC) |
| 2020-06-03 | 13.226.138.74 (ClassC) |
| 2020-10-08 | 13.249.178.82 (ClassC) |
| 2021-05-30 | 13.225.61.44 (ClassC) |
| 2021-07-29 | 13.249.126.73 (ClassC) |
| 2021-09-13 | 204.246.178.67 (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) |
| 2022-02-08 | 54.240.168.32 (ClassC) |
| 2024-05-17 | 18.65.229.117 (ClassC) |
| 2024-08-14 | 13.227.74.61 (ClassC) |
| 2024-09-24 | 18.161.6.124 (ClassC) |
| 2025-01-07 | 18.161.6.73 (ClassC) |
| 2025-03-08 | 18.161.6.23 (ClassC) |
| 2025-05-20 | 18.65.229.42 (ClassC) |
| 2025-06-04 | 18.65.229.38 (ClassC) |
| 2025-08-09 | 18.161.6.60 (ClassC) |
| 2025-09-12 | 3.169.173.100 (ClassC) |
| Date | Domain | IP |
| public.zybooks.com | 2025-07-19 | 185.199.110.153 |
| zyevents.prod.zybooks.com | 2025-07-07 | 104.18.9.243 |
| coral-sim.zybooks.com | 2025-02-26 | 18.161.6.36 |
| admin.zybooks.com | 2024-12-03 | 18.172.170.48 |
| learn.zybooks.com | 2024-06-11 | 3.163.24.16 |
| wp.zybooks.com | 2025-06-02 | 54.69.119.107 |
| resources.zybooks.com | 2024-12-23 | 18.238.238.88 |
| static-resources.zybooks.com | 2024-12-15 | 3.165.160.116 |
| zytools.zybooks.com | 2015-03-01 | 54.230.6.160 |
| programming-submissions.zybooks.com | 2024-08-04 | 3.163.158.11 |
| zyevents.zybooks.com | 2024-11-06 | 34.212.77.78 |
| exports.zybooks.com | 2024-07-05 | 3.163.24.116 |
| www.zybooks.com | 2025-03-07 | 141.193.213.10 |
| mathjax.zybooks.com | 2024-11-24 | 18.161.6.55 |
| legacy.zybooks.com | 2024-07-26 | 204.246.191.31 |