| Date | IP Address |
| 2017-11-01 | 138.68.173.106 (ClassC) |
| 2017-11-15 | 188.166.69.179 (ClassC) |
| 2017-11-16 | 46.101.153.128 (ClassC) |
| 2019-03-14 | 104.248.221.171 (ClassC) |
| 2019-03-23 | 104.236.98.14 (ClassC) |
| 2019-04-20 | 138.197.208.86 (ClassC) |
| 2019-07-19 | 162.243.225.95 (ClassC) |
| 2019-09-23 | 147.135.76.246 (ClassC) |
| 2019-09-24 | 147.135.77.10 (ClassC) |
| 2019-10-13 | 147.135.1.99 (ClassC) |
| 2019-10-13 | 147.135.15.191 (ClassC) |
| 2019-10-27 | 147.135.1.102 (ClassC) |
| 2019-11-05 | 147.135.1.30 (ClassC) |
| 2019-12-19 | 35.199.28.179 (ClassC) |
| 2019-12-25 | 35.221.25.23 (ClassC) |
| 2019-12-27 | 35.245.39.242 (ClassC) |
| 2020-01-30 | 34.102.146.242 (ClassC) |
| 2021-04-21 | 104.18.24.231 (ClassC) |
| 2023-08-16 | 104.18.25.231 (ClassC) |
| 2024-08-01 | 104.18.1.207 (ClassC) |
| 2024-08-18 | 104.18.0.207 (ClassC) |
| 2025-12-30 | 172.64.153.143 (ClassC) |
| 2026-02-01 | 104.18.34.113 (ClassC) |
| Date | Domain | IP |
| api.omnisend.com | 2023-08-16 | 104.18.15.46 |
| app.omnisend.com | 2023-08-16 | 104.18.25.231 |
| api-docs.omnisend.com | 2026-01-02 | 104.16.241.118 |
| www.omnisend.com | 2023-08-04 | 104.18.29.25 |