| Date | IP Address |
| 2023-08-25 | 104.86.242.227 (ClassC) |
| 2024-02-28 | 23.196.116.123 (ClassC) |
| 2024-04-13 | 23.38.232.190 (ClassC) |
| 2024-09-22 | 23.196.152.68 (ClassC) |
| 2024-10-23 | 23.221.22.16 (ClassC) |
| 2025-04-17 | 23.38.191.160 (ClassC) |
| 2025-04-23 | 23.62.33.170 (ClassC) |
| 2025-09-08 | 23.41.4.87 (ClassC) |
| 2025-09-13 | 23.46.17.180 (ClassC) |
| 2025-11-15 | 23.216.147.138 (ClassC) |
| 2026-02-16 | 23.41.4.82 (ClassC) |
| Date | Domain | IP |
| www2.pay.gov | 2024-10-28 | 199.169.192.21 |
| qa.pay.gov | 2023-08-25 | 104.86.242.227 |
| www.qa.pay.gov | 2023-08-25 | 104.86.242.227 |
| spoofgate.pay.gov | 2023-08-25 | 104.108.82.138 |
| www.pay.gov | 2023-08-25 | 104.86.242.227 |