| Date | IP Address |
| 2018-04-19 | 13.33.115.39 (ClassC) |
| 2018-04-19 | 13.33.115.168 (ClassC) |
| 2018-04-19 | 13.33.115.217 (ClassC) |
| 2020-11-30 | 13.225.25.31 (ClassC) |
| 2021-06-27 | 65.8.228.68 (ClassC) |
| 2021-06-27 | 65.8.228.103 (ClassC) |
| 2021-06-27 | 65.8.228.29 (ClassC) |
| 2024-01-12 | 204.246.191.18 (ClassC) |
| 2025-09-05 | 104.18.38.174 (ClassC) |
| 2025-10-11 | 172.64.149.82 (ClassC) |
| Date | Domain | IP |
| email.mailgun.goproposal.com | 2025-06-19 | 34.110.180.34 |
| help.goproposal.com | 2024-01-12 | 204.246.191.18 |
| app.goproposal.com | 2023-08-16 | 18.130.59.172 |