| Date | IP Address |
| 2019-03-21 | 23.219.36.96 (ClassC) |
| 2020-06-15 | 104.124.60.27 (ClassC) |
| 2020-06-15 | 104.124.60.41 (ClassC) |
| 2021-10-19 | 184.27.215.51 (ClassC) |
| 2023-11-02 | 104.96.163.211 (ClassC) |
| 2024-03-13 | 23.44.175.117 (ClassC) |
| 2024-06-01 | 104.70.127.5 (ClassC) |
| 2024-06-17 | 23.44.175.144 (ClassC) |
| 2024-07-07 | 104.21.66.168 (ClassC) |
| 2025-01-28 | 13.107.253.70 (ClassC) |
| 2025-04-04 | 13.107.246.70 (ClassC) |
| Date | Domain | IP |
| l.mail.centr.com | 2024-12-23 | 13.107.253.70 |
| image.email.centr.com | 2024-03-12 | 92.123.202.29 |
| click.email.centr.com | 2025-03-05 | 13.111.18.12 |
| cdn.centr.com | 2024-02-19 | 23.46.17.15 |
| web-cdn.centr.com | 2024-03-09 | 23.46.17.35 |
| www.centr.com | 2023-11-02 | 104.96.163.211 |