| Date | IP Address |
| 2023-08-25 | 104.86.254.184 (ClassC) |
| 2024-03-21 | 184.25.210.59 (ClassC) |
| 2024-08-30 | 23.216.145.80 (ClassC) |
| 2024-10-03 | 23.219.78.135 (ClassC) |
| 2024-12-06 | 23.38.191.147 (ClassC) |
| 2025-03-29 | 23.216.147.130 (ClassC) |
| 2025-08-14 | 23.41.4.86 (ClassC) |
| 2025-09-22 | 23.46.17.177 (ClassC) |
| 2025-11-06 | 23.216.147.142 (ClassC) |
| 2026-01-16 | 23.41.4.77 (ClassC) |
| Date | Domain | IP |
| trainingc.edit.eitc.irs.gov | 2023-08-25 | 104.86.254.184 |
| poc.edit.eitc.irs.gov | 2023-08-25 | 104.86.254.184 |
| trainingd.edit.eitc.irs.gov | 2023-08-25 | 104.86.254.184 |
| prod.edit.eitc.irs.gov | 2023-08-25 | 104.86.254.184 |
| pete.edit.eitc.irs.gov | 2023-08-25 | 23.5.254.84 |
| eite.edit.eitc.irs.gov | 2023-08-25 | 104.86.254.184 |
| bat.edit.eitc.irs.gov | 2023-08-25 | 23.5.254.84 |
| sit.edit.eitc.irs.gov | 2023-08-25 | 104.86.254.184 |
| dmesit.edit.eitc.irs.gov | 2023-08-25 | 23.5.254.84 |
| pmaint.edit.eitc.irs.gov | 2023-08-25 | 104.86.254.184 |
| dev.edit.eitc.irs.gov | 2023-08-25 | 104.86.254.184 |
| dmedev.edit.eitc.irs.gov | 2023-08-25 | 104.86.254.184 |
| www.pmaint.eitc.irs.gov | 2023-08-25 | 23.5.254.84 |
| www.eitc.irs.gov | 2023-08-25 | 104.86.227.206 |