| Date | IP Address |
| 2015-03-14 | 54.235.142.233 (ClassC) |
| 2016-08-04 | 23.21.175.238 (ClassC) |
| 2025-04-02 | 104.17.108.83 (ClassC) |
| Date | Domain | IP |
| api.outbound.io | 2015-03-05 | 54.235.142.233 |
| cdn.outbound.io | 2024-05-02 | 104.17.110.83 |
| www.outbound.io | 2024-12-31 | 104.17.108.83 |