| Date | IP Address |
| 2024-04-27 | 13.33.252.35 (ClassC) |
| 2025-10-07 | 108.156.172.114 (ClassC) |
| 2025-10-29 | 54.192.100.92 (ClassC) |
| 2026-02-28 | 3.169.173.66 (ClassC) |
| Date | Domain | IP |
| engage.email.qa.sparkpost.corptech.nylcloud.com | 2026-02-22 | 18.161.6.8 |
| content.engage.email.qa.sparkpost.corptech.nylcloud.com | 2025-07-31 | 204.246.191.66 |
| engage.email.stage.sparkpost.corptech.nylcloud.com | 2025-01-29 | 52.84.162.127 |
| engage.email.sparkpost.corptech.nylcloud.com | 2026-02-28 | 3.169.173.66 |
| content.engage.email.sparkpost.corptech.nylcloud.com | 2021-08-24 | 13.249.135.21 |