| Count | Prefix |
|---|---|
| 1,164 | 166.0.0.0/16 |
| 14 | 166.1.0.0/16 |
| 84 | 166.21.0.0/16 |
| 47 | 166.23.0.0/16 |
| 3 | 166.25.0.0/16 |
| 2 | 166.37.0.0/16 |
| 4 | 166.48.0.0/16 |
| 1 | 166.59.0.0/16 |
| 14,217 | 166.62.0.0/16 |
| 12 | 166.63.0.0/16 |
| 78 | 166.67.0.0/16 |
| 16,754 | 166.70.0.0/16 |
| 231 | 166.73.0.0/16 |
| 3 | 166.76.0.0/16 |
| 44 | 166.77.0.0/16 |
| 1,036 | 166.78.0.0/16 |
| 1,536 | 166.82.0.0/16 |
| 259 | 166.84.0.0/16 |
| 13 | 166.86.0.0/16 |
| 292 | 166.88.0.0/16 |
| 20 | 166.89.0.0/16 |
| 7 | 166.90.0.0/16 |
| 10 | 166.93.0.0/16 |
| 13 | 166.94.0.0/16 |
| 2 | 166.98.0.0/16 |
| 777 | 166.102.0.0/16 |
| 1 | 166.107.0.0/16 |
| 832 | 166.108.0.0/16 |
| 3 | 166.109.0.0/16 |
| 10 | 166.111.0.0/16 |
| 1,019 | 166.113.0.0/16 |
| 209 | 166.117.0.0/16 |
| 2 | 166.120.0.0/16 |
| 95 | 166.122.0.0/16 |
| 3 | 166.125.0.0/16 |
| 1 | 166.127.0.0/16 |
| 1 | 166.130.0.0/16 |
| 2 | 166.137.0.0/16 |
| 1 | 166.139.0.0/16 |
| 2 | 166.141.0.0/16 |
| 1 | 166.149.0.0/16 |
| 1 | 166.156.0.0/16 |
| 257 | 166.171.0.0/16 |
| 1 | 166.193.0.0/16 |
| 1 | 166.194.0.0/16 |
| 256 | 166.195.0.0/16 |
| 256 | 166.203.0.0/16 |
| 1 | 166.210.0.0/16 |
| 256 | 166.215.0.0/16 |
| 1 | 166.217.0.0/16 |
| 4 | 166.230.0.0/16 |
| 1 | 166.246.0.0/16 |
| 1 | 166.249.0.0/16 |
| 2 | 166.250.0.0/16 |
| 2 | 166.255.0.0/16 |