| Date | IP Address |
| 2025-05-07 | 51.140.59.233 (ClassC) |
| Date | Domain | IP |
| acp.iat.willistowerswatson.com | 2025-02-05 | 20.96.146.155 |
| refdata.cftservices.iat.willistowerswatson.com | 2024-09-10 | 52.151.83.112 |
| userprofile.cftservices.iat.willistowerswatson.com | 2025-05-03 | 51.140.122.226 |
| logging.cftservices.iat.willistowerswatson.com | 2024-11-13 | 51.140.122.226 |
| sts.cftservices.iat.willistowerswatson.com | 2025-05-07 | 51.140.59.233 |
| audit.cftservices.iat.willistowerswatson.com | 2025-04-27 | 51.140.122.226 |