| Date | IP Address |
| 2023-08-26 | 18.177.102.206 (ClassC) |
| 2023-11-01 | 54.178.196.202 (ClassC) |
| 2023-11-11 | 46.51.252.108 (ClassC) |
| 2024-01-18 | 54.178.227.185 (ClassC) |
| 2024-03-17 | 54.250.126.189 (ClassC) |
| 2024-04-09 | 13.112.175.82 (ClassC) |
| 2024-05-24 | 13.113.243.157 (ClassC) |
| 2024-08-13 | 52.69.185.229 (ClassC) |
| 2024-09-01 | 52.193.199.46 (ClassC) |
| 2024-09-22 | 52.194.25.6 (ClassC) |
| 2024-11-06 | 18.176.255.58 (ClassC) |
| 2024-11-13 | 54.65.220.29 (ClassC) |
| 2024-11-24 | 35.74.76.171 (ClassC) |
| 2024-12-01 | 18.182.250.232 (ClassC) |
| 2024-12-16 | 52.68.93.228 (ClassC) |
| 2025-01-09 | 18.181.142.117 (ClassC) |
| 2025-02-03 | 54.178.253.129 (ClassC) |
| 2025-02-13 | 3.114.190.181 (ClassC) |
| 2025-02-26 | 18.176.188.35 (ClassC) |
| 2025-03-15 | 57.182.173.121 (ClassC) |
| 2025-04-18 | 52.198.198.22 (ClassC) |
| 2025-07-11 | 176.34.48.53 (ClassC) |
| 2025-07-29 | 52.197.108.176 (ClassC) |
| 2025-08-05 | 54.95.18.133 (ClassC) |
| 2025-08-18 | 35.72.192.138 (ClassC) |
| 2025-09-01 | 57.180.117.206 (ClassC) |
| 2026-02-24 | 13.159.243.25 (ClassC) |
| Date | Domain | IP |
| cf.jac-recruitment.jp | 2024-12-16 | 99.84.66.97 |
| corp.jac-recruitment.jp | 2025-07-13 | 18.238.238.127 |
| www.jac-recruitment.jp | 2024-04-09 | 172.67.41.241 |