| Date | IP Address |
| 2015-05-18 | 54.236.84.111 (ClassC) |
| 2016-05-30 | 52.20.195.18 (ClassC) |
| 2024-03-16 | 34.205.242.146 (ClassC) |
| 2024-07-24 | 52.86.6.113 (ClassC) |
| 2024-07-31 | 52.71.57.184 (ClassC) |
| 2024-08-07 | 3.94.41.167 (ClassC) |
| 2024-08-30 | 54.209.32.212 (ClassC) |
| 2024-09-12 | 54.161.222.85 (ClassC) |
| 2024-09-27 | 3.130.204.160 (ClassC) |
| 2024-11-06 | 3.130.253.23 (ClassC) |
| 2025-02-18 | 3.18.7.81 (ClassC) |
| 2025-05-05 | 154.199.216.168 (ClassC) |
| 2026-01-23 | 108.186.193.180 (ClassC) |
| Date | Domain | IP |
| www.21stcn.com | 2024-09-30 | 52.86.6.113 |