| Date | IP Address |
| 2023-08-26 | 23.193.76.9 (ClassC) |
| 2024-04-13 | 23.59.202.86 (ClassC) |
| 2024-09-17 | 23.222.145.40 (ClassC) |
| 2024-11-25 | 23.6.250.27 (ClassC) |
| 2025-08-02 | 23.6.108.16 (ClassC) |
| 2025-09-10 | 23.198.165.142 (ClassC) |
| 2026-01-22 | 23.216.147.195 (ClassC) |
| Date | Domain | IP |
| origin-m81150.mfa.co.jp | 2026-01-22 | 150.60.216.36 |
| mail.mfa.co.jp | 2025-07-16 | 150.60.216.34 |
| enterpriseregistration.mfa.co.jp | 2025-02-27 | 40.126.26.19 |
| pop.mfa.co.jp | 2026-01-22 | 150.60.216.34 |
| ftp.mfa.co.jp | 2023-08-26 | 23.193.76.9 |
| autodiscover.mfa.co.jp | 2025-02-26 | 52.96.121.56 |
| enterpriseenrollment.mfa.co.jp | 2025-03-16 | 20.189.172.161 |
| www.mfa.co.jp | 2023-08-26 | 23.193.76.9 |