| Date | IP Address |
| 2023-08-25 | 23.5.254.84 (ClassC) |
| 2024-03-12 | 184.25.210.59 (ClassC) |
| 2024-04-18 | 104.100.69.12 (ClassC) |
| 2025-02-13 | 23.38.191.171 (ClassC) |
| 2025-03-18 | 23.41.4.86 (ClassC) |
| 2025-04-13 | 23.41.4.77 (ClassC) |
| 2025-05-02 | 23.216.147.130 (ClassC) |
| 2025-05-16 | 23.44.175.122 (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 |