| Date | IP Address |
| 2020-05-21 | 99.86.32.56 (ClassC) |
| 2020-12-07 | 13.225.62.101 (ClassC) |
| 2020-12-07 | 13.225.62.25 (ClassC) |
| 2020-12-07 | 13.225.62.78 (ClassC) |
| 2024-08-28 | 18.161.6.21 (ClassC) |
| 2024-10-19 | 3.163.189.105 (ClassC) |
| 2024-12-04 | 18.161.6.92 (ClassC) |
| 2025-08-10 | 3.170.91.91 (ClassC) |
| 2026-01-02 | 3.175.34.76 (ClassC) |
| 2026-01-13 | 3.175.34.54 (ClassC) |
| 2026-01-23 | 3.175.34.58 (ClassC) |
| 2026-01-26 | 3.175.34.20 (ClassC) |
| Date | Domain | IP |
| uatutilities-self-service.seattle.gov | 2024-07-08 | 18.161.6.103 |
| civiformstage.seattle.gov | 2025-12-26 | 44.226.175.227 |
| coscmg.seattle.gov | 2026-01-01 | 20.69.67.21 |
| email.seattle.gov | 2025-01-19 | 52.96.113.200 |
| login.seattle.gov | 2025-08-20 | 156.74.248.148 |
| myutilities.seattle.gov | 2024-08-28 | 18.161.6.21 |
| powerlines.seattle.gov | 2026-01-03 | 141.193.213.10 |
| www.seattle.gov | 2025-05-09 | 156.74.251.21 |