| Date | IP Address |
| 2021-03-25 | 209.236.71.58 (ClassC) |
| 2024-11-05 | 208.91.197.132 (ClassC) |
| 2026-01-22 | 104.247.81.99 (ClassC) |
| Date | Domain | IP |
| mail10.chinograding.com | 2024-09-16 | 208.91.197.132 |
| smtp01.chinograding.com | 2025-08-14 | 99.83.175.80 |
| mail1.chinograding.com | 2024-09-26 | 208.91.197.132 |
| server1.chinograding.com | 2024-11-05 | 208.91.197.132 |
| pop3.chinograding.com | 2024-09-11 | 208.91.197.132 |
| mx5.chinograding.com | 2024-10-31 | 208.91.197.132 |
| mail8.chinograding.com | 2024-10-14 | 208.91.197.132 |
| mta.chinograding.com | 2024-11-05 | 208.91.197.132 |
| imap.chinograding.com | 2024-11-21 | 208.91.197.132 |
| sniper.chinograding.com | 2024-11-05 | 208.91.197.132 |
| mailserver.chinograding.com | 2025-08-14 | 99.83.175.80 |