| Date | IP Address |
| 2024-05-22 | 52.89.194.3 (ClassC) |
| 2024-06-13 | 34.208.169.228 (ClassC) |
| 2024-07-06 | 44.239.50.17 (ClassC) |
| 2024-07-14 | 54.69.104.236 (ClassC) |
| 2024-07-23 | 35.164.184.119 (ClassC) |
| 2024-08-09 | 44.239.246.231 (ClassC) |
| 2024-08-18 | 52.24.113.56 (ClassC) |
| 2024-08-25 | 52.33.178.220 (ClassC) |
| 2024-08-29 | 54.186.218.72 (ClassC) |
| 2024-09-22 | 35.80.235.239 (ClassC) |
| 2024-10-08 | 52.32.141.239 (ClassC) |
| 2024-10-17 | 52.32.165.173 (ClassC) |
| 2024-10-30 | 52.25.193.53 (ClassC) |
| 2024-11-13 | 44.238.223.103 (ClassC) |
| 2024-11-17 | 54.149.35.42 (ClassC) |
| 2024-12-10 | 52.25.223.4 (ClassC) |
| 2024-12-30 | 52.25.57.252 (ClassC) |
| 2025-01-06 | 44.232.216.183 (ClassC) |
| 2025-01-21 | 52.37.131.11 (ClassC) |
| 2025-02-09 | 34.208.182.73 (ClassC) |
| 2025-02-12 | 44.240.71.196 (ClassC) |
| 2025-03-24 | 35.161.222.242 (ClassC) |
| 2025-05-01 | 100.21.7.132 (ClassC) |
| 2025-05-14 | 35.160.95.59 (ClassC) |
| 2025-06-12 | 34.211.123.112 (ClassC) |
| 2025-06-30 | 52.39.251.20 (ClassC) |
| 2025-08-29 | 44.237.182.191 (ClassC) |
| 2026-02-25 | 52.42.83.40 (ClassC) |
| Date | Domain | IP |
| portal.avatax.com | 2024-10-02 | 35.170.210.211 |
| rest.avatax.com | 2025-10-13 | 35.81.50.204 |
| sandbox-rest.avatax.com | 2025-10-23 | 54.189.217.102 |
| www.avatax.com | 2023-11-13 | 52.40.128.104 |