| Date | IP Address |
| 2023-07-20 | 107.21.136.214 (ClassC) |
| 2026-02-22 | 107.154.225.101 (ClassC) |
| Date | Domain | IP |
| api.buildfax.com | 2024-01-11 | 99.84.66.118 |
| www.buildfax.com | 2025-05-20 | 104.198.66.131 |
| delivery.buildfax.com | 2026-02-22 | 107.154.225.101 |
| cres.delivery.buildfax.com | 2026-02-22 | 107.154.225.101 |
| trottervogel-cres.delivery.buildfax.com | 2025-05-08 | 107.154.225.101 |