131.81.0.0/16
46 assigned ranges in this /16.
/24 breakdown
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 131.81.2.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.4.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.5.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.6.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.9.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.11.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.17.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.18.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.20.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.68.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.89.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.96.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.99.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.100.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.103.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.152.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.162.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.166.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.170.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.171.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.191.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.192.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.199.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.200.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.202.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.204.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.206.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.208.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.224.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.225.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.226.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.227.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.228.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.229.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.230.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.231.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.232.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.233.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.234.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.235.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.249.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.250.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.251.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.252.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.253.0/24 | United States (100%) | 1 | 1 | 1 |
| 131.81.254.0/24 | United States (100%) | 1 | 1 | 1 |
Assigned ranges
| Range | ASN | Org | Country |
|---|---|---|---|
131.81.2.0 – 131.81.3.255 | AS27046 | United States Department of Defense (DoD) | US |
131.81.4.0 – 131.81.4.255 | AS721 | United States Department of Defense (DoD) | US |
131.81.5.0 – 131.81.5.255 | AS27046 | United States Department of Defense (DoD) | US |
131.81.6.0 – 131.81.8.255 | AS721 | United States Department of Defense (DoD) | US |
131.81.9.0 – 131.81.10.255 | AS27046 | United States Department of Defense (DoD) | US |
131.81.11.0 – 131.81.16.255 | AS721 | United States Department of Defense (DoD) | US |
131.81.17.0 – 131.81.17.255 | AS27046 | United States Department of Defense (DoD) | US |
131.81.18.0 – 131.81.19.255 | AS721 | United States Department of Defense (DoD) | US |
131.81.20.0 – 131.81.67.255 | AS27046 | United States Department of Defense (DoD) | US |
131.81.68.0 – 131.81.88.255 | AS721 | United States Department of Defense (DoD) | US |
131.81.89.0 – 131.81.95.255 | AS27046 | United States Department of Defense (DoD) | US |
131.81.96.0 – 131.81.98.255 | AS721 | United States Department of Defense (DoD) | US |
131.81.99.0 – 131.81.99.255 | AS27046 | United States Department of Defense (DoD) | US |
131.81.100.0 – 131.81.102.255 | AS721 | United States Department of Defense (DoD) | US |
131.81.103.0 – 131.81.151.255 | AS27046 | United States Department of Defense (DoD) | US |
31 more ranges in this block.