| Date | IP Address |
| 2022-09-01 | 18.218.40.19 (ClassC) |
| 2024-06-09 | 3.18.195.105 (ClassC) |
| 2025-01-07 | 3.139.17.3 (ClassC) |
| 2025-01-19 | 3.14.50.229 (ClassC) |
| 2025-02-11 | 3.128.191.243 (ClassC) |
| 2025-03-20 | 18.188.33.2 (ClassC) |
| 2025-03-31 | 3.134.69.163 (ClassC) |
| 2025-04-26 | 18.218.27.47 (ClassC) |
| 2025-05-10 | 18.118.125.60 (ClassC) |
| 2025-08-18 | 18.220.190.170 (ClassC) |
| 2025-09-06 | 3.146.244.143 (ClassC) |
| 2025-10-01 | 3.137.0.244 (ClassC) |
| Date | Domain | IP |
| api.personalize.dev.hyatt.global | 2024-06-11 | 3.139.248.247 |
| api.bff.dev.hyatt.global | 2024-06-11 | 18.216.45.84 |
| api.notification.dev.hyatt.global | 2024-06-09 | 3.18.195.105 |
| api.marketing-emails.dev.hyatt.global | 2024-06-11 | 3.19.203.253 |
| api.journey.dev.hyatt.global | 2024-06-11 | 3.130.56.122 |