| Date | Domain | IP |
| cloudapps1.perf.irs.gov | 2023-08-25 | 104.86.225.193 |
| cloudapps2.perf.irs.gov | 2023-08-25 | 104.85.171.129 |
| cloudapps3.perf.irs.gov | 2023-08-25 | 104.86.225.193 |
| cloudapps4.perf.irs.gov | 2024-06-18 | 23.209.30.236 |
| eitc.perf.irs.gov | 2023-08-25 | 104.86.225.193 |
| www.eitc.perf.irs.gov | 2023-08-25 | 23.55.216.90 |
| efile.perf.irs.gov | 2023-08-25 | 104.85.171.129 |
| freefile.perf.irs.gov | 2023-08-25 | 23.55.216.90 |
| forms.perf.irs.gov | 2023-08-25 | 23.55.216.90 |
| apps.perf.irs.gov | 2023-08-25 | 23.55.216.90 |
| cloudapps.perf.irs.gov | 2023-08-25 | 104.85.171.129 |
| marketingexpress.perf.irs.gov | 2023-08-25 | 104.86.225.193 |
| www.marketingexpress.perf.irs.gov | 2023-08-25 | 104.86.225.193 |
| www.perf.irs.gov | 2023-08-25 | 23.55.216.90 |