72.21.0.0/16
29 assigned ranges in this /16.
/24 breakdown
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 72.21.0.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.8.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.10.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.12.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.15.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.17.0/24 | Canada (100%) | 1 | 1 | 1 |
| 72.21.19.0/24 | Canada (100%) | 1 | 1 | 1 |
| 72.21.20.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.21.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.22.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.23.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.24.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.36.0/24 | United Kingdom (100%) | 1 | 1 | 1 |
| 72.21.40.0/24 | United Kingdom (100%) | 1 | 1 | 1 |
| 72.21.64.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.94.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.96.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.128.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.160.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.165.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.168.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.172.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.173.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.174.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.175.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.177.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.185.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.192.0/24 | United States (100%) | 1 | 1 | 1 |
| 72.21.224.0/24 | United States (100%) | 1 | 1 | 1 |
Assigned ranges
| Range | ASN | Org | Country |
|---|---|---|---|
72.21.0.0 – 72.21.7.255 | AS399065 | Dixie EPA | US |
72.21.8.0 – 72.21.9.255 | AS16557 | Colo Solutions | US |
72.21.10.0 – 72.21.11.255 | AS20055 | Wholesail networks LLC | US |
72.21.12.0 – 72.21.14.255 | AS16557 | Colo Solutions | US |
72.21.15.0 – 72.21.15.255 | AS22805 | CNL Financial Group Inc. | US |
72.21.17.0 – 72.21.17.255 | AS394151 | Whatbox Inc. | CA |
72.21.19.0 – 72.21.19.255 | AS394151 | Whatbox Inc. | CA |
72.21.20.0 – 72.21.20.255 | AS16557 | Colo Solutions | US |
72.21.21.0 – 72.21.21.255 | AS14492 | DataPipe Inc. | US |
72.21.22.0 – 72.21.22.255 | AS16557 | Colo Solutions | US |
72.21.23.0 – 72.21.23.255 | AS397287 | AutoCrib Inc. | US |
72.21.24.0 – 72.21.31.255 | AS21699 | IO INC | US |
72.21.36.0 – 72.21.39.255 | AS39921 | Rackspace Ltd. | GB |
72.21.40.0 – 72.21.47.255 | AS15395 | Rackspace Ltd. | GB |
72.21.64.0 – 72.21.79.255 | AS4474 | TCT West Inc. | US |
14 more ranges in this block.