131.15.0.0/16
37 assigned ranges in this /16.
/24 breakdown
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 131.15.16.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.36.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.38.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.45.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.47.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.48.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.61.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.63.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.65.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.66.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.68.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.72.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.73.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.81.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.88.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.89.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.90.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.93.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.98.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.100.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.116.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.118.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.119.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.120.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.121.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.136.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.137.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.144.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.152.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.160.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.168.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.208.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.209.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.233.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.240.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.252.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.15.254.0/24 | United States (100%) | 1 | 1 | 1 |
Assigned ranges
| Range | ASN | Org | Country |
|---|---|---|---|
131.15.16.0 – 131.15.35.255 | AS56 | United States Department of Defense (DoD) | US |
131.15.36.0 – 131.15.37.255 | AS749 | United States Department of Defense (DoD) | US |
131.15.38.0 – 131.15.44.255 | AS391 | Air Force Systems Networking | US |
131.15.45.0 – 131.15.46.255 | AS391 | Air Force Systems Networking | US |
131.15.47.0 – 131.15.47.255 | AS749 | United States Department of Defense (DoD) | US |
131.15.48.0 – 131.15.60.255 | AS391 | Air Force Systems Networking | US |
131.15.61.0 – 131.15.62.255 | AS391 | Air Force Systems Networking | US |
131.15.63.0 – 131.15.64.255 | AS749 | United States Department of Defense (DoD) | US |
131.15.65.0 – 131.15.65.255 | AS391 | Air Force Systems Networking | US |
131.15.66.0 – 131.15.67.255 | AS749 | United States Department of Defense (DoD) | US |
131.15.68.0 – 131.15.71.255 | AS391 | Air Force Systems Networking | US |
131.15.72.0 – 131.15.72.255 | AS749 | United States Department of Defense (DoD) | US |
131.15.73.0 – 131.15.80.255 | AS391 | Air Force Systems Networking | US |
131.15.81.0 – 131.15.87.255 | AS749 | United States Department of Defense (DoD) | US |
131.15.88.0 – 131.15.88.255 | AS391 | Air Force Systems Networking | US |
22 more ranges in this block.