121.231.0.0/16
64 assigned ranges in this /16.
/24 breakdown
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 121.231.0.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.4.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.8.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.18.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.19.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.26.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.27.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.30.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.31.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.40.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.50.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.52.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.53.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.75.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.76.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.80.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.82.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.83.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.85.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.87.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.88.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.89.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.90.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.96.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.97.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.98.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.100.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.104.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.105.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.106.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.107.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.112.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.116.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.122.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.123.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.135.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.136.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.157.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.159.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.160.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.161.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.163.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.164.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.167.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.168.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.187.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.188.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.204.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.205.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.212.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.213.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.219.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.220.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.232.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.234.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.235.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.236.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.238.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.239.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.245.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.246.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.248.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.251.0/24 | China (100%) | 1 | 1 | 1 |
| 121.231.252.0/24 | China (100%) | 1 | 1 | 1 |
Assigned ranges
| Range | ASN | Org | Country |
|---|---|---|---|
121.231.0.0 – 121.231.3.255 | AS140293 | China Telecom | CN |
121.231.4.0 – 121.231.7.255 | AS4134 | China Telecom | CN |
121.231.8.0 – 121.231.17.255 | AS140293 | China Telecom | CN |
121.231.18.0 – 121.231.18.255 | AS4134 | China Telecom | CN |
121.231.19.0 – 121.231.25.255 | AS140293 | China Telecom | CN |
121.231.26.0 – 121.231.26.255 | AS4134 | China Telecom | CN |
121.231.27.0 – 121.231.29.255 | AS140293 | China Telecom | CN |
121.231.30.0 – 121.231.30.255 | AS4134 | China Telecom | CN |
121.231.31.0 – 121.231.39.255 | AS140293 | China Telecom | CN |
121.231.40.0 – 121.231.49.255 | AS4134 | China Telecom | CN |
121.231.50.0 – 121.231.51.255 | AS140293 | China Telecom | CN |
121.231.52.0 – 121.231.52.255 | AS4134 | China Telecom | CN |
121.231.53.0 – 121.231.74.255 | AS140293 | China Telecom | CN |
121.231.75.0 – 121.231.75.255 | AS4134 | China Telecom | CN |
121.231.76.0 – 121.231.79.255 | AS140293 | China Telecom | CN |
49 more ranges in this block.