221.181.0.0/16
32 assigned ranges in this /16.
/24 breakdown
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 221.181.19.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.23.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.35.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.37.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.65.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.73.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.76.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.77.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.79.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.80.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.83.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.86.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.97.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.100.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.128.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.130.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.140.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.146.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.148.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.159.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.169.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.173.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.192.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.194.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.213.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.226.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.231.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.240.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.242.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.247.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.249.0/24 | China (100%) | 1 | 1 | 1 |
| 221.181.255.0/24 | China (100%) | 1 | 1 | 1 |
Assigned ranges
| Range | ASN | Org | Country |
|---|---|---|---|
221.181.19.0 – 221.181.22.255 | AS9808 | China Mobile Communications Group Co. Ltd | CN |
221.181.23.0 – 221.181.34.255 | AS9808 | China Mobile Communications Group Co. Ltd | CN |
221.181.35.0 – 221.181.36.255 | AS9808 | China Mobile Communications Group Co. Ltd | CN |
221.181.37.0 – 221.181.64.255 | AS9808 | China Mobile Communications Group Co. Ltd | CN |
221.181.65.0 – 221.181.72.255 | AS24400 | China Mobile Communications Group Co. Ltd | CN |
221.181.73.0 – 221.181.75.255 | AS9808 | China Mobile Communications Group Co. Ltd | CN |
221.181.76.0 – 221.181.76.255 | AS24400 | China Mobile Communications Group Co. Ltd | CN |
221.181.77.0 – 221.181.78.255 | AS9808 | China Mobile Communications Group Co. Ltd | CN |
221.181.79.0 – 221.181.79.255 | AS24400 | China Mobile Communications Group Co. Ltd | CN |
221.181.80.0 – 221.181.82.255 | AS9808 | China Mobile Communications Group Co. Ltd | CN |
221.181.83.0 – 221.181.85.255 | AS24400 | China Mobile Communications Group Co. Ltd | CN |
221.181.86.0 – 221.181.96.255 | AS24400 | China Mobile Communications Group Co. Ltd | CN |
221.181.97.0 – 221.181.99.255 | AS9808 | China Mobile Communications Group Co. Ltd | CN |
221.181.100.0 – 221.181.127.255 | AS24400 | China Mobile Communications Group Co. Ltd | CN |
221.181.128.0 – 221.181.129.255 | AS56046 | China Mobile Communications Corporation | CN |
17 more ranges in this block.