| 134.39.0.0/16 | CTCNET1 Communications Technology Center (NET-CTCNET1) 3860 | 66K | US |
| 164.116.0.0/16 | Washington Schools Information Processing Cooperative 2000 - | 66K | US |
| 168.156.0.0/16 | CTC-NET-B1 Communications Technology for Washington (NET-CTC | 66K | US |
| 168.212.0.0/16 | Washington School Information Processing Cooperative 2000 20 | 66K | US |
| 168.99.0.0/16 | Washington Schools Information Cooperative (WSIPC) 2000 200t | 66K | US |
| 169.204.0.0/16 | Washington School Information Processing Cooperative 2000 20 | 66K | US |
| 152.157.128.0/17 | WA-K20 | 33K | US |
| 192.247.128.0/17 | NETBLK-MUKILTEO Mukilteo School District 9401 Sharon Drive E | 33K | US |
| 216.186.0.0/17 | WA-K20-BLK3 Washington State K-20 Telecommunications Network | 33K | US |
| 72.233.128.0/17 | WA-K20-BLK8 Washington State K20 Telecommunications Network | 33K | US |
| 206.193.0.0/18 | SPOKSD81 Spokane School District 81 Instructional Technology | 16K | US |
| 216.210.0.0/18 | WA-K20-BLK10 Washington State K20 Telecommunications Network | 16K | US |
| 69.56.64.0/18 | WA-K20-BLK6 Washington State K20 Telecommunications Network | 16K | US |
| 152.157.0.0/19 | WA-K20 | 8.2K | US |
| 152.157.96.0/19 | WA-K20 | 8.2K | US |
| 173.229.32.0/19 | WA-K20-BLK11 Washington State K-20 Telecommunications Networ | 8.2K | US |
| 192.247.128.0/19 | NETBLK-MUKILTEO Mukilteo School District 9401 Sharon Drive E | 8.2K | US |
| 207.180.96.0/19 | WA-K20-BLK5 Washington State K-20 Telecommunications Network | 8.2K | US |
| 68.179.192.0/19 | WA-K20-BLK7 Washington State K-20 Telecommunications Network | 8.2K | US |
| 152.157.48.0/20 | WA-K20 | 4.1K | US |
| 152.157.80.0/20 | WA-K20 | 4.1K | US |
| 192.211.16.0/20 | NETBLK-EVERGREEN The Evergreen State College Computing and C | 4.1K | US |
| 63.135.32.0/20 | St. Martin's University 5300 Pacific Ave. S.E. Lacey WA 9850 | 4.1K | US |
| 66.96.64.0/20 | WA-K20-BLK4 Washington State K-20 Telecommunications Network | 4.1K | US |
| 192.56.248.0/21 | WA-K20-CIS Washington State K-20 Telecommunications Network | 2K | US |
| 192.56.248.0/22 | WA-K20-CIS Washington State K-20 Telecommunications Network | 1K | US |
| 192.56.246.0/23 | WA-K20-CIS Washington State K-20 Telecommunications Network | 512 | US |
| 192.56.252.0/23 | WA-K20-CIS Washington State K-20 Telecommunications Network | 512 | US |
| 192.102.5.0/24 | CLARKNET Clark College Computer Science Department, 1800 Eas | 256 | US |
| 192.206.201.0/24 | Washington School Information Processing Cooperative 2000 20 | 256 | US |
| 192.207.104.0/24 | Washington School Information Processing Cooperative 2121 W | 256 | US |
| 192.64.1.0/24 | www.cis.ctc.edu | 256 | US |
| 199.245.238.0/24 | Saint Martin's College (http://www.stmartin.edu/) | 256 | US |
| 216.210.0.0/24 | WA-K20 | 256 | US |