| Date | IP Address |
| 2018-01-01 | 216.3.50.64 (ClassC) |
| 2018-05-15 | 209.107.208.89 (ClassC) |
| 2018-05-15 | 209.107.208.96 (ClassC) |
| 2024-08-24 | 141.193.213.10 (ClassC) |
| 2026-02-20 | 141.193.213.11 (ClassC) |
| Date | Domain | IP |
| enterpriseenrollment.nephrologyonline.com | 2024-07-20 | 20.190.154.140 |
| www.nephrologyonline.com | 2024-08-24 | 141.193.213.10 |