| 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) |
| 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 |