| Date | IP Address |
| 2022-08-28 | 108.139.15.4 (ClassC) |
| 2024-12-26 | 99.84.252.65 (ClassC) |
| 2024-12-26 | 99.84.252.73 (ClassC) |
| 2025-09-16 | 99.84.66.41 (ClassC) |
| 2025-09-20 | 99.84.66.40 (ClassC) |
| Date | Domain | IP |
| prod-hound.prod.a.bill.com | 2025-08-06 | 99.84.66.52 |
| api.stage.a.bill.com | 2025-09-16 | 99.84.66.41 |
| api.perf.a.bill.com | 2024-09-28 | 99.84.66.60 |
| www-ctu.cs.a.bill.com | 2024-07-26 | 35.164.114.125 |
| dev.a.bill.com | 2025-09-13 | 8.8.8.8 |
| dev-hound.dev.a.bill.com | 2025-09-05 | 3.163.24.107 |
| app-example.dev.a.bill.com | 2025-05-03 | 18.161.6.104 |
| auth.dev.a.bill.com | 2025-01-23 | 18.161.6.28 |
| api.dev.a.bill.com | 2024-09-14 | 18.161.6.33 |