| Date | IP Address |
| 2024-04-13 | 34.203.130.96 (ClassC) |
| 2024-05-02 | 107.23.25.157 (ClassC) |
| 2024-07-19 | 34.194.20.149 (ClassC) |
| 2024-10-04 | 50.19.4.220 (ClassC) |
| 2024-11-25 | 34.237.95.171 (ClassC) |
| 2024-12-28 | 34.226.65.149 (ClassC) |
| Date | Domain | IP |
| pass-thru-tester-lab.fasttax.com | 2024-04-13 | 52.200.81.171 |
| gosystemrslab.fasttax.com | 2024-04-13 | 35.172.127.160 |
| insourceexpresslab.fasttax.com | 2024-04-13 | 52.200.81.171 |
| rs-gosyswsvc.fasttax.com | 2024-04-13 | 52.200.81.171 |
| gosystemrspd.fasttax.com | 2024-10-05 | 35.174.121.218 |
| maintenance.fasttax.com | 2024-11-25 | 155.46.172.126 |
| gosystemrslab-ciam.fasttax.com | 2024-04-13 | 35.172.127.160 |
| gosystemrs.fasttax.com | 2024-12-14 | 3.224.246.59 |
| gosystemrssat.fasttax.com | 2024-04-13 | 35.174.121.218 |
| sat-gosystempt.fasttax.com | 2024-04-13 | 34.203.130.96 |
| gosystemrstbb-devcicdtest.fasttax.com | 2024-04-13 | 35.172.127.160 |
| gosystemrsdevcicdtest.fasttax.com | 2024-04-13 | 35.172.127.160 |
| gosystemrsdev.fasttax.com | 2024-04-13 | 3.88.246.220 |
| www.fasttax.com | 2024-12-26 | 155.46.172.254 |