| Date | IP Address |
| 2024-04-13 | 44.233.8.185 (ClassC) |
| 2024-05-25 | 50.112.35.249 (ClassC) |
| 2024-07-30 | 52.37.75.212 (ClassC) |
| 2024-11-15 | 44.235.125.222 (ClassC) |
| 2024-11-25 | 52.11.148.135 (ClassC) |
| 2025-01-29 | 18.246.200.64 (ClassC) |
| 2025-04-25 | 35.162.170.65 (ClassC) |
| 2025-06-05 | 52.36.29.137 (ClassC) |
| 2025-08-06 | 52.24.99.157 (ClassC) |
| 2025-09-06 | 54.69.123.128 (ClassC) |
| 2026-01-17 | 35.86.8.68 (ClassC) |
| 2026-02-11 | 52.89.109.36 (ClassC) |
| Date | Domain | IP |
| tax-filing.optimatax.com | 2025-11-22 | 35.155.204.0 |
| serverless.api.optimatax.com | 2024-07-08 | 99.84.66.116 |
| portal.optimatax.com | 2025-05-26 | 52.35.170.99 |
| protection.optimatax.com | 2025-08-02 | 204.246.191.17 |
| css.optimatax.com | 2024-10-21 | 99.84.66.120 |
| www.optimatax.com | 2024-04-13 | 44.233.8.185 |