121.0.0.0/8
1,302 announced IP ranges across this /8. Select a /16 block below for its own breakdown and assigned ranges.
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 121.0.0.0/16 | South Korea (45%) | 7 | 9 | 11 |
| 121.1.0.0/16 | Philippines (50%) | 3 | 3 | 4 |
| 121.2.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 121.4.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.6.0.0/16 | Singapore (100%) | 1 | 2 | 3 |
| 121.7.0.0/16 | Singapore (100%) | 1 | 2 | 3 |
| 121.8.0.0/16 | China (100%) | 1 | 2 | 3 |
| 121.10.0.0/16 | China (100%) | 1 | 4 | 6 |
| 121.11.0.0/16 | China (100%) | 1 | 4 | 15 |
| 121.12.0.0/16 | China (100%) | 1 | 3 | 7 |
| 121.14.0.0/16 | China (100%) | 1 | 3 | 6 |
| 121.16.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.17.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.22.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.29.0.0/16 | China (100%) | 1 | 2 | 2 |
| 121.30.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.31.0.0/16 | China (100%) | 1 | 2 | 7 |
| 121.32.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.36.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.37.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.39.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.40.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.42.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.43.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.44.0.0/16 | Australia (100%) | 1 | 2 | 5 |
| 121.45.0.0/16 | Australia (100%) | 1 | 2 | 4 |
| 121.46.0.0/16 | China (26%) | 9 | 18 | 23 |
| 121.48.0.0/16 | China (100%) | 1 | 1 | 4 |
| 121.49.0.0/16 | China (100%) | 1 | 1 | 3 |
| 121.50.0.0/16 | Taiwan (31%) | 8 | 17 | 26 |
| 121.51.0.0/16 | China (100%) | 1 | 1 | 5 |
| 121.52.0.0/16 | Indonesia (59%) | 5 | 8 | 17 |
| 121.53.0.0/16 | South Korea (100%) | 1 | 9 | 24 |
| 121.54.0.0/16 | Philippines (35%) | 7 | 10 | 17 |
| 121.55.0.0/16 | South Korea (33%) | 3 | 3 | 3 |
| 121.56.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.58.0.0/16 | China (40%) | 4 | 8 | 10 |
| 121.59.0.0/16 | Hong Kong (88%) | 2 | 2 | 8 |
| 121.60.0.0/16 | China (100%) | 1 | 2 | 5 |
| 121.62.0.0/16 | China (100%) | 1 | 2 | 4 |
| 121.64.0.0/16 | South Korea (100%) | 1 | 1 | 1 |
| 121.65.0.0/16 | South Korea (100%) | 1 | 4 | 9 |
| 121.67.0.0/16 | South Korea (100%) | 1 | 8 | 15 |
| 121.69.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.70.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.72.0.0/16 | New Zealand (100%) | 1 | 1 | 1 |
| 121.74.0.0/16 | New Zealand (100%) | 1 | 1 | 1 |
| 121.76.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.78.0.0/16 | South Korea (94%) | 5 | 12 | 87 |
| 121.79.0.0/16 | New Zealand (33%) | 3 | 4 | 6 |
| 121.80.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 121.88.0.0/16 | South Korea (100%) | 1 | 1 | 2 |
| 121.89.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.90.0.0/16 | New Zealand (100%) | 1 | 1 | 1 |
| 121.91.0.0/16 | United States (56%) | 7 | 15 | 32 |
| 121.92.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 121.93.0.0/16 | United States (50%) | 2 | 2 | 2 |
| 121.94.0.0/16 | Japan (89%) | 2 | 4 | 9 |
| 121.95.0.0/16 | Japan (60%) | 2 | 3 | 5 |
| 121.96.0.0/16 | Philippines (100%) | 1 | 1 | 21 |
| 121.97.0.0/16 | Philippines (100%) | 1 | 1 | 22 |
| 121.98.0.0/16 | New Zealand (100%) | 1 | 2 | 7 |
| 121.100.0.0/16 | Indonesia (43%) | 5 | 8 | 14 |
| 121.101.0.0/16 | Indonesia (30%) | 6 | 9 | 10 |
| 121.102.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 121.103.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 121.104.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 121.112.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 121.120.0.0/16 | Malaysia (100%) | 1 | 1 | 1 |
| 121.124.0.0/16 | South Korea (100%) | 1 | 2 | 3 |
| 121.125.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.126.0.0/16 | South Korea (100%) | 1 | 1 | 5 |
| 121.127.0.0/16 | Philippines (21%) | 9 | 16 | 28 |
| 121.128.0.0/16 | South Korea (100%) | 1 | 5 | 13 |
| 121.129.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.130.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.131.0.0/16 | South Korea (100%) | 1 | 5 | 7 |
| 121.133.0.0/16 | South Korea (100%) | 1 | 6 | 9 |
| 121.134.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.135.0.0/16 | South Korea (100%) | 1 | 4 | 6 |
| 121.137.0.0/16 | South Korea (100%) | 1 | 2 | 8 |
| 121.138.0.0/16 | South Korea (100%) | 1 | 3 | 4 |
| 121.139.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.140.0.0/16 | South Korea (100%) | 1 | 4 | 12 |
| 121.141.0.0/16 | South Korea (100%) | 1 | 3 | 7 |
| 121.143.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.144.0.0/16 | South Korea (100%) | 1 | 3 | 4 |
| 121.150.0.0/16 | South Korea (100%) | 1 | 2 | 4 |
| 121.151.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.156.0.0/16 | South Korea (100%) | 1 | 3 | 6 |
| 121.157.0.0/16 | South Korea (100%) | 1 | 3 | 6 |
| 121.160.0.0/16 | South Korea (100%) | 1 | 3 | 5 |
| 121.162.0.0/16 | South Korea (100%) | 1 | 4 | 6 |
| 121.163.0.0/16 | South Korea (100%) | 1 | 4 | 7 |
| 121.164.0.0/16 | South Korea (100%) | 1 | 2 | 3 |
| 121.168.0.0/16 | South Korea (100%) | 1 | 3 | 3 |
| 121.169.0.0/16 | South Korea (100%) | 1 | 2 | 3 |
| 121.170.0.0/16 | South Korea (100%) | 1 | 4 | 8 |
| 121.171.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.172.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.174.0.0/16 | South Korea (100%) | 1 | 2 | 4 |
| 121.175.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.177.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.178.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.181.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.184.0.0/16 | South Korea (100%) | 1 | 2 | 4 |
| 121.185.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.186.0.0/16 | South Korea (100%) | 1 | 1 | 1 |
| 121.187.0.0/16 | South Korea (100%) | 1 | 3 | 4 |
| 121.189.0.0/16 | South Korea (100%) | 1 | 2 | 2 |
| 121.190.0.0/16 | South Korea (100%) | 1 | 5 | 7 |
| 121.191.0.0/16 | South Korea (100%) | 1 | 2 | 3 |
| 121.192.0.0/16 | China (100%) | 1 | 1 | 2 |
| 121.193.0.0/16 | China (100%) | 1 | 1 | 2 |
| 121.194.0.0/16 | China (100%) | 1 | 1 | 4 |
| 121.195.0.0/16 | China (100%) | 1 | 1 | 4 |
| 121.196.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.200.0.0/16 | Australia (35%) | 8 | 16 | 20 |
| 121.201.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.202.0.0/16 | Hong Kong (100%) | 1 | 1 | 5 |
| 121.204.0.0/16 | China (100%) | 1 | 4 | 9 |
| 121.205.0.0/16 | China (100%) | 1 | 2 | 4 |
| 121.207.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.208.0.0/16 | Australia (100%) | 1 | 1 | 1 |
| 121.224.0.0/16 | China (100%) | 1 | 1 | 11 |
| 121.225.0.0/16 | China (100%) | 1 | 2 | 3 |
| 121.226.0.0/16 | China (100%) | 1 | 2 | 2 |
| 121.227.0.0/16 | China (100%) | 1 | 2 | 86 |
| 121.228.0.0/16 | China (100%) | 1 | 3 | 88 |
| 121.229.0.0/16 | China (100%) | 1 | 4 | 30 |
| 121.231.0.0/16 | China (100%) | 1 | 2 | 64 |
| 121.233.0.0/16 | China (100%) | 1 | 3 | 12 |
| 121.236.0.0/16 | China (100%) | 1 | 1 | 7 |
| 121.237.0.0/16 | China (100%) | 1 | 5 | 8 |
| 121.238.0.0/16 | China (100%) | 1 | 2 | 53 |
| 121.239.0.0/16 | China (100%) | 1 | 2 | 10 |
| 121.240.0.0/16 | India (100%) | 1 | 3 | 23 |
| 121.241.0.0/16 | India (100%) | 1 | 1 | 21 |
| 121.242.0.0/16 | India (100%) | 1 | 3 | 29 |
| 121.243.0.0/16 | India (100%) | 1 | 2 | 13 |
| 121.244.0.0/16 | India (84%) | 2 | 4 | 31 |
| 121.245.0.0/16 | India (100%) | 1 | 3 | 7 |
| 121.246.0.0/16 | India (100%) | 1 | 2 | 7 |
| 121.247.0.0/16 | India (100%) | 1 | 2 | 11 |
| 121.248.0.0/16 | China (100%) | 1 | 1 | 2 |
| 121.249.0.0/16 | China (100%) | 1 | 1 | 1 |
| 121.251.0.0/16 | China (100%) | 1 | 1 | 2 |
| 121.253.0.0/16 | South Korea (100%) | 1 | 2 | 3 |
| 121.254.0.0/16 | South Korea (72%) | 3 | 7 | 18 |
| 121.255.0.0/16 | China (100%) | 1 | 1 | 1 |