| Date | IP Address |
| 2021-06-25 | 65.8.48.25 (ClassC) |
| 2021-06-25 | 65.8.48.49 (ClassC) |
| 2021-07-08 | 13.226.201.80 (ClassC) |
| 2021-07-21 | 54.192.58.59 (ClassC) |
| 2021-07-28 | 54.230.226.39 (ClassC) |
| 2021-07-28 | 54.230.226.55 (ClassC) |
| 2021-07-28 | 54.230.226.117 (ClassC) |
| 2021-08-11 | 13.249.75.75 (ClassC) |
| 2021-08-13 | 143.204.166.62 (ClassC) |
| 2021-08-13 | 143.204.166.115 (ClassC) |
| 2021-09-16 | 99.84.250.3 (ClassC) |
| 2021-09-16 | 99.84.250.100 (ClassC) |
| 2021-11-10 | 52.222.130.122 (ClassC) |
| 2022-01-19 | 13.227.39.123 (ClassC) |
| 2024-02-28 | 99.84.66.45 (ClassC) |
| 2024-07-30 | 99.84.66.97 (ClassC) |
| 2024-09-13 | 99.84.66.68 (ClassC) |
| 2025-09-12 | 34.111.138.51 (ClassC) |
| Date | Domain | IP |
| cdn.proofpointisolation.com | 2025-04-15 | 34.102.129.30 |
| content.pendo.proofpointisolation.com | 2024-02-28 | 99.84.66.45 |
| www.proofpointisolation.com | 2025-04-24 | 34.83.7.104 |