| Date | IP Address |
| 2021-03-01 | 52.208.128.86 (ClassC) |
| 2025-01-30 | 54.72.153.129 (ClassC) |
| Date | Domain | IP |
| api.z-dn.net | 2024-08-13 | 52.211.37.232 |
| api.external.tutoring-infra-production.z-dn.net | 2024-04-30 | 52.208.145.97 |
| ct.z-dn.net | 2024-02-03 | 104.17.143.158 |
| pl-comet.z-dn.net | 2025-01-30 | 54.72.153.129 |
| es-comet.z-dn.net | 2024-10-05 | 52.16.216.128 |
| us-comet.z-dn.net | 2024-11-07 | 34.249.235.135 |
| srv-supersonic-tbs-api.external.textbook-solutions-development.z-dn.net | 2024-05-22 | 54.216.107.147 |
| haproxy-lb-a.external.central-ingress-development.z-dn.net | 2024-11-24 | 52.51.78.166 |
| www.z-dn.net | 2023-11-01 | 52.19.133.17 |