| 146.76.0.0/16 | State Department of Natural Resources State of Washington DN | 66K | US |
| 147.55.0.0/16 | Department of Information Services State of Washington DIS/T | 66K | US |
| 147.56.0.0/16 | Department of Social and Health Service State of Washington | 66K | US |
| 152.113.0.0/16 | Office of the Attorney General State of Washington MS 0100 O | 66K | US |
| 159.1.0.0/16 | Department of Labor and Industries State of Washington LNI - | 66K | US |
| 165.151.0.0/16 | Department of Ecology State of Washington - MS 7600 Olympia | 66K | US |
| 167.72.0.0/16 | Washington State Patrol Computer Services Division 321 Cleve | 66K | US |
| 198.238.0.0/16 | Department of Information Services State of Washington DIS/T | 66K | US |
| 198.239.0.0/16 | Department of Information Services State of Washington DIS/T | 66K | US |
| 206.194.128.0/18 | Office of Administrator for the Courts State of Washington P | 16K | US |
| 143.55.96.0/19 | Washington State Department of Children, Youth, and Families | 8.2K | US |
| 149.20.128.0/19 | Dept. Of Children, Youth and Families (DCYF) | 8.2K | US |
| 198.7.64.0/19 | Department of Licencing State of Washington - MS 8091 Olympi | 8.2K | US |
| 209.74.192.0/19 | State of Washington | 8.2K | US |
| 192.209.32.0/20 | Department of Revenue State of Washington GA Bldg., MS 47462 | 4.1K | US |
| 192.230.0.0/20 | Department of Health State of Washington MS 7904 Olympia WA | 4.1K | US |
| 192.209.48.0/21 | Department of Revenue State of Washington GA Bldg., MS 47462 | 2K | US |
| 192.209.56.0/22 | Department of Revenue State of Washington GA Bldg., MS 47462 | 1K | US |
| 198.180.4.0/22 | Department of Community Trade and Economic Development State | 1K | US |
| 198.187.0.0/22 | Department of Information Services State of Washington DIS/T | 1K | US |
| 199.47.32.0/22 | State of Washington | 1K | US |
| 192.209.60.0/23 | Department of Revenue State of Washington GA Bldg., MS 47462 | 512 | US |
| 198.186.220.0/23 | Office of Financial Management State of Washington - MS 3113 | 512 | US |
| 198.99.100.0/23 | Department of Fish and Wildlife State of Washington - MS 313 | 512 | US |
| 192.149.56.0/24 | Department of Health State of Washington MS 7904 Olympia WA | 256 | US |
| 192.150.143.0/24 | Department of Health State of Washington MS 7904 Olympia WA | 256 | US |
| 192.94.25.0/24 | Department of Fish and Wildlife State of Washington - MS 313 | 256 | US |
| 198.135.121.0/24 | Department of Retirement Systems State of Washington P.O. Bo | 256 | US |
| 198.239.8.0/24 | Washington Technology Services Olympia, WA | 256 | US |
| 198.239.9.0/24 | Washington Technology Services Quincy, WA | 256 | US |
| 198.62.236.0/24 | Department of Fish and Wildlife State of Washington - MS 313 | 256 | US |
| 199.47.36.0/24 | Spectrum Networks proxy registration | 256 | US |