| Date | IP Address |
| 2025-02-27 | 54.250.239.149 (ClassC) |
| 2025-05-14 | 35.74.186.122 (ClassC) |
| 2025-06-19 | 57.182.179.211 (ClassC) |
| 2025-08-21 | 57.183.49.135 (ClassC) |
| 2025-09-07 | 35.75.69.68 (ClassC) |
| 2025-10-01 | 18.177.25.212 (ClassC) |
| 2025-12-28 | 52.199.237.228 (ClassC) |
| 2026-02-09 | 35.75.80.171 (ClassC) |
| Date | Domain | IP |
| maeda.envi-sign.com | 2025-02-27 | 54.250.239.149 |
| kajima.envi-sign.com | 2025-02-27 | 54.250.239.149 |
| okumura.envi-sign.com | 2025-02-27 | 52.198.162.199 |
| static.envi-sign.com | 2023-11-16 | 52.219.172.68 |
| auth.envi-sign.com | 2025-02-26 | 3.115.65.166 |
| dev-taisei.envi-sign.com | 2025-02-27 | 18.176.70.130 |
| obayashi.envi-sign.com | 2025-02-27 | 54.250.239.149 |
| order.envi-sign.com | 2025-02-27 | 18.180.191.105 |
| customer.envi-sign.com | 2025-02-27 | 54.250.239.149 |
| reports.envi-sign.com | 2025-02-27 | 52.198.162.199 |
| order-dev.envi-sign.com | 2025-02-27 | 54.92.57.139 |