172.0.0.0/8
2,258 announced IP ranges across this /8. Select a /16 block below for its own breakdown and assigned ranges.
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 172.0.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.32.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.56.0.0/16 | United States (100%) | 1 | 1 | 4 |
| 172.57.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.58.0.0/16 | United States (100%) | 1 | 1 | 5 |
| 172.59.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.60.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.64.0.0/16 | United States (100%) | 1 | 3 | 21 |
| 172.66.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 172.67.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.68.0.0/16 | United States (100%) | 1 | 4 | 86 |
| 172.69.0.0/16 | United States (100%) | 1 | 4 | 95 |
| 172.70.0.0/16 | United States (100%) | 1 | 4 | 41 |
| 172.71.0.0/16 | United States (100%) | 1 | 4 | 44 |
| 172.76.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.80.0.0/16 | Iran (67%) | 2 | 2 | 3 |
| 172.81.0.0/16 | United States (82%) | 6 | 48 | 55 |
| 172.82.0.0/16 | United States (82%) | 7 | 57 | 84 |
| 172.83.0.0/16 | United States (81%) | 7 | 63 | 70 |
| 172.84.0.0/16 | United States (72%) | 7 | 30 | 39 |
| 172.85.0.0/16 | United States (79%) | 4 | 16 | 28 |
| 172.86.0.0/16 | United States (81%) | 4 | 27 | 37 |
| 172.87.0.0/16 | United States (96%) | 2 | 21 | 23 |
| 172.88.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.92.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 172.93.0.0/16 | United States (66%) | 11 | 34 | 59 |
| 172.94.0.0/16 | Romania (26%) | 9 | 13 | 89 |
| 172.95.0.0/16 | United States (100%) | 1 | 1 | 3 |
| 172.96.0.0/16 | United States (78%) | 8 | 36 | 54 |
| 172.97.0.0/16 | United States (70%) | 4 | 20 | 23 |
| 172.98.0.0/16 | United States (66%) | 13 | 50 | 77 |
| 172.99.0.0/16 | United States (69%) | 5 | 48 | 54 |
| 172.100.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.102.0.0/16 | United States (67%) | 9 | 21 | 39 |
| 172.103.0.0/16 | United States (64%) | 4 | 11 | 11 |
| 172.104.0.0/16 | Singapore (100%) | 1 | 1 | 3 |
| 172.105.0.0/16 | Singapore (100%) | 1 | 1 | 1 |
| 172.108.0.0/16 | United States (100%) | 1 | 3 | 6 |
| 172.109.0.0/16 | United States (100%) | 1 | 4 | 10 |
| 172.110.0.0/16 | United States (75%) | 6 | 52 | 59 |
| 172.111.0.0/16 | United States (32%) | 15 | 40 | 122 |
| 172.112.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.120.0.0/16 | United States (46%) | 9 | 19 | 185 |
| 172.121.0.0/16 | United States (53%) | 10 | 26 | 150 |
| 172.122.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 172.124.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.128.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.216.0.0/16 | Panama (100%) | 1 | 1 | 1 |
| 172.217.0.0/16 | United States (100%) | 1 | 2 | 7 |
| 172.218.0.0/16 | Canada (100%) | 1 | 1 | 1 |
| 172.220.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.221.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 172.224.0.0/16 | United States (50%) | 2 | 2 | 86 |
| 172.225.0.0/16 | United States (51%) | 2 | 2 | 71 |
| 172.226.0.0/16 | Netherlands (50%) | 2 | 2 | 109 |
| 172.232.0.0/16 | Singapore (67%) | 2 | 2 | 3 |
| 172.235.0.0/16 | Singapore (50%) | 2 | 2 | 12 |
| 172.240.0.0/16 | United States (100%) | 1 | 1 | 8 |
| 172.241.0.0/16 | United States (97%) | 2 | 9 | 37 |
| 172.242.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.244.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.245.0.0/16 | United States (67%) | 5 | 11 | 52 |
| 172.246.0.0/16 | France (100%) | 1 | 1 | 3 |
| 172.247.0.0/16 | United States (91%) | 3 | 5 | 43 |
| 172.248.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 172.252.0.0/16 | United States (72%) | 12 | 41 | 177 |
| 172.253.0.0/16 | United States (100%) | 1 | 2 | 4 |
| 172.254.0.0/16 | United States (100%) | 1 | 4 | 11 |
| 172.255.0.0/16 | United States (90%) | 3 | 10 | 29 |