| 129.0.0.0/8 | WHOIS (ARIN) | Various Registries (Maintained by ARIN) | US |
| 129.19.0.0/16 | BGP route | AS14041 University Corporation for Atmospheric Research | — |
| 129.19.0.0/16 | WHOIS (ARIN) | Colorado State University | US |
| 129.19.0.0/16 | ARIN assigned | — | US |
| 129.19.128.0/18 | WHOIS (ARIN) | University Corporation for Atmospheric Research | — |
| 129.19.128.0/20 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.128.0/20 | WHOIS (ARIN) | Fort Lewis College | US |
| 129.19.176.0/20 | BGP route | AS393869 COLORADO MOUNTAIN COLLEGE | — |
| 129.19.176.0/20 | WHOIS (ARIN) | COLORADO MOUNTAIN COLLEGE | US |
| 129.19.148.0/23 | BGP route | AS14041 University Corporation for Atmospheric Research | — |
| 129.19.148.0/23 | WHOIS (ARIN) | Battelle Ecology (NEON) | US |
| 129.19.128.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.129.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.130.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.131.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.132.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.133.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.134.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.135.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.136.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.137.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.138.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.139.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.140.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.141.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.142.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.143.0/24 | BGP route | AS54393 Fort Lewis College | — |
| 129.19.144.0/24 | BGP route | AS393657 Colorado Mesa University | — |
| 129.19.144.0/24 | WHOIS (ARIN) | Colorado Mesa University | US |
| 129.19.145.0/24 | BGP route | AS17015 Western Colorado University | — |
| 129.19.145.0/24 | WHOIS (ARIN) | Western Colorado University | US |
| 129.19.146.0/24 | BGP route | AS397315 Region 10 League for Economic Assistance and Planning, Inc. | — |
| 129.19.146.0/24 | WHOIS (ARIN) | Rocky Mountain Biological Laboratory (RMBL) | US |
| 129.19.147.0/24 | BGP route | AS397315 Region 10 League for Economic Assistance and Planning, Inc. | — |
| 129.19.147.0/24 | WHOIS (ARIN) | Region 10 League for Economic Assistance and Planning, Inc. | US |
| 129.19.148.0/24 | BGP route | AS14041 University Corporation for Atmospheric Research | — |
| 129.19.149.0/24 | BGP route | AS14041 University Corporation for Atmospheric Research | — |
| 129.19.151.0/24 | BGP route | AS30136 Adams 12 | — |
| 129.19.151.0/24 | WHOIS (ARIN) | Adams 12 | US |
| 129.19.152.0/24 | BGP route | AS30136 Adams 12 | — |
| 129.19.152.0/24 | WHOIS (ARIN) | Adams 12 | US |
| 129.19.153.0/24 | BGP route | AS14041 University Corporation for Atmospheric Research | — |
| 129.19.153.0/24 | WHOIS (ARIN) | State Higher Education Policy Center (SHEPC) | US |
| 129.19.154.0/24 | BGP route | AS401317 Boulder Public Library District | — |
| 129.19.154.0/24 | WHOIS (ARIN) | Boulder Public Library District | US |
| 129.19.156.0/24 | BGP route | AS194 University Corporation for Atmospheric Research | — |
| 129.19.156.0/24 | WHOIS (ARIN) | Department of Interior United States Geological Survey | US |
| 129.19.162.0/24 | BGP route | AS14041 University Corporation for Atmospheric Research | — |
| 129.19.162.0/24 | WHOIS (ARIN) | Colorado State University | US |
| 129.19.163.0/24 | BGP route | AS65 Air Force Systems Networking | — |
| 129.19.163.0/24 | WHOIS (ARIN) | Air Force Systems Networking | US |
| 129.19.165.0/24 | BGP route | AS14041 University Corporation for Atmospheric Research | — |
| 129.19.165.0/24 | WHOIS (ARIN) | University Corporation for Atmospheric Research | US |
| 129.19.174.0/24 | BGP route | AS396212 Aims Community College | — |
| 129.19.174.0/24 | WHOIS (ARIN) | Aims Community College | US |