| Date | IP Address |
| 2020-04-23 | 13.249.46.109 (ClassC) |
| 2020-06-23 | 13.226.143.126 (ClassC) |
| 2020-06-23 | 13.226.143.45 (ClassC) |
| 2025-09-15 | 104.18.9.80 (ClassC) |
| 2025-11-19 | 104.18.8.80 (ClassC) |
| Date | Domain | IP |
| servicing.trn-firstmark.nelnetvelocity.com | 2025-09-16 | 104.18.11.6 |
| servicing.dev-firstmark.nelnetvelocity.com | 2025-09-15 | 104.18.9.80 |
| servicing.firstmark.nelnetvelocity.com | 2025-08-22 | 104.18.11.6 |
| servicing.trn-citris.nelnetvelocity.com | 2025-09-18 | 104.18.11.6 |
| servicing.trn-accessloans.nelnetvelocity.com | 2025-08-21 | 104.18.11.6 |