166.0.0.0/8
1,166 announced IP ranges across this /8. Select a /16 block below for its own breakdown and assigned ranges.
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 166.0.0.0/16 | United States (51%) | 25 | 61 | 168 |
| 166.1.0.0/16 | United States (56%) | 19 | 50 | 137 |
| 166.2.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.19.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.20.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.21.0.0/16 | United States (100%) | 1 | 1 | 13 |
| 166.23.0.0/16 | United States (100%) | 1 | 1 | 25 |
| 166.25.0.0/16 | United States (100%) | 1 | 1 | 13 |
| 166.32.0.0/16 | United States (100%) | 1 | 2 | 8 |
| 166.33.0.0/16 | United States (100%) | 1 | 2 | 4 |
| 166.34.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 166.35.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 166.36.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 166.37.0.0/16 | United States (100%) | 1 | 3 | 10 |
| 166.38.0.0/16 | United States (100%) | 1 | 3 | 22 |
| 166.39.0.0/16 | United States (100%) | 1 | 2 | 8 |
| 166.40.0.0/16 | United States (100%) | 1 | 2 | 10 |
| 166.41.0.0/16 | United States (100%) | 1 | 2 | 5 |
| 166.43.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 166.44.0.0/16 | United States (100%) | 1 | 2 | 4 |
| 166.46.0.0/16 | United States (100%) | 1 | 2 | 6 |
| 166.47.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 166.48.0.0/16 | Canada (100%) | 1 | 2 | 7 |
| 166.49.0.0/16 | United States (50%) | 2 | 2 | 2 |
| 166.50.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 166.56.0.0/16 | United States (100%) | 1 | 2 | 5 |
| 166.58.0.0/16 | United States (100%) | 1 | 3 | 7 |
| 166.61.0.0/16 | United States (100%) | 1 | 1 | 2 |
| 166.62.0.0/16 | United States (93%) | 2 | 5 | 14 |
| 166.63.0.0/16 | United States (67%) | 2 | 3 | 3 |
| 166.64.0.0/16 | Australia (100%) | 1 | 1 | 9 |
| 166.65.0.0/16 | Australia (100%) | 1 | 1 | 4 |
| 166.66.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 166.67.0.0/16 | United States (100%) | 1 | 3 | 11 |
| 166.69.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.70.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.72.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.73.0.0/16 | United States (100%) | 1 | 2 | 10 |
| 166.74.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.75.0.0/16 | Hong Kong (100%) | 1 | 1 | 1 |
| 166.77.0.0/16 | United States (100%) | 1 | 1 | 11 |
| 166.78.0.0/16 | United States (100%) | 1 | 2 | 4 |
| 166.80.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.81.0.0/16 | Hong Kong (94%) | 2 | 3 | 17 |
| 166.82.0.0/16 | United States (100%) | 1 | 2 | 11 |
| 166.84.0.0/16 | United States (100%) | 1 | 1 | 2 |
| 166.85.0.0/16 | South Africa (100%) | 1 | 1 | 2 |
| 166.86.0.0/16 | Germany (57%) | 3 | 5 | 7 |
| 166.87.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 166.88.0.0/16 | United States (60%) | 15 | 54 | 211 |
| 166.89.0.0/16 | United States (100%) | 1 | 1 | 2 |
| 166.90.0.0/16 | United States (100%) | 1 | 3 | 6 |
| 166.91.0.0/16 | United States (100%) | 1 | 2 | 5 |
| 166.92.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.93.0.0/16 | United States (100%) | 1 | 1 | 2 |
| 166.94.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 166.95.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 166.96.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 166.98.0.0/16 | United States (67%) | 3 | 6 | 9 |
| 166.99.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.100.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.102.0.0/16 | United States (100%) | 1 | 1 | 4 |
| 166.104.0.0/16 | South Korea (100%) | 1 | 1 | 1 |
| 166.107.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 166.108.0.0/16 | United States (40%) | 3 | 4 | 5 |
| 166.109.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.111.0.0/16 | China (100%) | 1 | 1 | 2 |
| 166.113.0.0/16 | United States (100%) | 1 | 3 | 3 |
| 166.114.0.0/16 | Bolivia (100%) | 1 | 2 | 3 |
| 166.117.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.119.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 166.120.0.0/16 | Australia (92%) | 2 | 5 | 26 |
| 166.122.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 166.123.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 166.125.0.0/16 | South Korea (100%) | 1 | 1 | 5 |
| 166.127.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.128.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.131.0.0/16 | United States (100%) | 1 | 1 | 8 |
| 166.136.0.0/16 | United States (100%) | 1 | 1 | 8 |
| 166.137.0.0/16 | United States (100%) | 1 | 1 | 16 |
| 166.138.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 166.139.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.140.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.147.0.0/16 | United States (100%) | 1 | 3 | 7 |
| 166.159.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.161.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.163.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.170.0.0/16 | United States (100%) | 1 | 1 | 2 |
| 166.171.0.0/16 | United States (100%) | 1 | 1 | 4 |
| 166.172.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.173.0.0/16 | United States (100%) | 1 | 1 | 2 |
| 166.175.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.176.0.0/16 | United States (100%) | 1 | 1 | 4 |
| 166.177.0.0/16 | United States (100%) | 1 | 1 | 4 |
| 166.179.0.0/16 | New Zealand (100%) | 1 | 1 | 1 |
| 166.180.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.181.0.0/16 | United States (100%) | 1 | 2 | 4 |
| 166.182.0.0/16 | United States (100%) | 1 | 2 | 9 |
| 166.183.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.184.0.0/16 | United States (100%) | 1 | 1 | 7 |
| 166.185.0.0/16 | United States (100%) | 1 | 1 | 4 |
| 166.186.0.0/16 | United States (100%) | 1 | 1 | 5 |
| 166.188.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 166.193.0.0/16 | United States (100%) | 1 | 2 | 6 |
| 166.194.0.0/16 | United States (100%) | 1 | 2 | 27 |
| 166.195.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.196.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.197.0.0/16 | United States (100%) | 1 | 2 | 22 |
| 166.198.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.200.0.0/16 | United States (100%) | 1 | 1 | 10 |
| 166.201.0.0/16 | United States (100%) | 1 | 1 | 10 |
| 166.203.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 166.204.0.0/16 | United States (100%) | 1 | 2 | 12 |
| 166.205.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.208.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.209.0.0/16 | United States (100%) | 1 | 2 | 7 |
| 166.210.0.0/16 | Colombia (100%) | 1 | 1 | 6 |
| 166.211.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.212.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.213.0.0/16 | United States (100%) | 1 | 1 | 4 |
| 166.215.0.0/16 | United States (100%) | 1 | 1 | 5 |
| 166.216.0.0/16 | United States (100%) | 1 | 2 | 23 |
| 166.217.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.218.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 166.219.0.0/16 | United States (100%) | 1 | 1 | 8 |
| 166.220.0.0/16 | United States (67%) | 2 | 3 | 3 |
| 166.224.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 166.225.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.230.0.0/16 | United States (100%) | 1 | 1 | 2 |
| 166.238.0.0/16 | Colombia (100%) | 1 | 1 | 1 |
| 166.239.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.241.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 166.246.0.0/16 | United States (100%) | 1 | 1 | 1 |