66.0.0.0/8
4,675 announced IP ranges across this /8. Select a /16 block below for its own breakdown and assigned ranges.
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 66.0.0.0/16 | United States (100%) | 1 | 3 | 13 |
| 66.2.0.0/16 | United States (100%) | 1 | 3 | 7 |
| 66.4.0.0/16 | United States (100%) | 1 | 1 | 11 |
| 66.6.0.0/16 | United States (87%) | 4 | 21 | 38 |
| 66.7.0.0/16 | United States (89%) | 2 | 11 | 18 |
| 66.8.0.0/16 | South Africa (83%) | 2 | 3 | 6 |
| 66.9.0.0/16 | United States (67%) | 3 | 13 | 18 |
| 66.10.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.11.0.0/16 | United States (80%) | 4 | 23 | 35 |
| 66.12.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.16.0.0/16 | United States (100%) | 1 | 3 | 5 |
| 66.17.0.0/16 | United States (72%) | 3 | 12 | 43 |
| 66.18.0.0/16 | United States (79%) | 4 | 10 | 14 |
| 66.19.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 66.20.0.0/16 | United States (100%) | 1 | 5 | 9 |
| 66.21.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 66.22.0.0/16 | United States (45%) | 4 | 11 | 58 |
| 66.23.0.0/16 | United States (71%) | 4 | 13 | 14 |
| 66.24.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.25.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 66.26.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.27.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 66.28.0.0/16 | United States (100%) | 1 | 4 | 9 |
| 66.29.0.0/16 | United States (100%) | 1 | 5 | 8 |
| 66.30.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.32.0.0/16 | United States (100%) | 1 | 2 | 5 |
| 66.33.0.0/16 | United States (72%) | 5 | 35 | 64 |
| 66.34.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.35.0.0/16 | United States (95%) | 2 | 12 | 21 |
| 66.36.0.0/16 | United States (94%) | 2 | 13 | 18 |
| 66.37.0.0/16 | United States (91%) | 3 | 15 | 23 |
| 66.38.0.0/16 | United States (75%) | 2 | 9 | 28 |
| 66.39.0.0/16 | United States (100%) | 1 | 7 | 15 |
| 66.40.0.0/16 | Canada (60%) | 2 | 3 | 5 |
| 66.41.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.42.0.0/16 | United States (100%) | 1 | 4 | 7 |
| 66.43.0.0/16 | United States (98%) | 2 | 20 | 46 |
| 66.44.0.0/16 | United States (100%) | 1 | 6 | 11 |
| 66.45.0.0/16 | United States (86%) | 4 | 40 | 65 |
| 66.46.0.0/16 | United States (100%) | 1 | 4 | 17 |
| 66.47.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.48.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.49.0.0/16 | Canada (88%) | 2 | 3 | 8 |
| 66.50.0.0/16 | Puerto Rico (91%) | 2 | 2 | 11 |
| 66.51.0.0/16 | United States (70%) | 4 | 22 | 33 |
| 66.52.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.53.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 66.54.0.0/16 | United States (69%) | 5 | 20 | 35 |
| 66.55.0.0/16 | United States (80%) | 3 | 10 | 15 |
| 66.56.0.0/16 | United States (56%) | 4 | 7 | 9 |
| 66.57.0.0/16 | United States (75%) | 2 | 3 | 4 |
| 66.58.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 66.59.0.0/16 | United States (97%) | 2 | 24 | 34 |
| 66.60.0.0/16 | United States (96%) | 2 | 9 | 23 |
| 66.61.0.0/16 | United States (100%) | 1 | 4 | 5 |
| 66.62.0.0/16 | United States (100%) | 1 | 11 | 42 |
| 66.63.0.0/16 | United States (100%) | 1 | 8 | 13 |
| 66.64.0.0/16 | United States (100%) | 1 | 4 | 4 |
| 66.65.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.66.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.68.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.70.0.0/16 | United States (80%) | 3 | 5 | 20 |
| 66.71.0.0/16 | United States (79%) | 2 | 13 | 19 |
| 66.72.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.73.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 66.74.0.0/16 | United States (100%) | 1 | 1 | 2 |
| 66.75.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 66.76.0.0/16 | United States (100%) | 1 | 2 | 16 |
| 66.77.0.0/16 | United States (100%) | 1 | 7 | 19 |
| 66.78.0.0/16 | United States (84%) | 4 | 26 | 44 |
| 66.79.0.0/16 | United States (67%) | 4 | 8 | 33 |
| 66.80.0.0/16 | United States (92%) | 4 | 15 | 36 |
| 66.81.0.0/16 | United States (89%) | 4 | 16 | 46 |
| 66.82.0.0/16 | United States (100%) | 1 | 2 | 20 |
| 66.83.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.84.0.0/16 | United States (100%) | 1 | 11 | 16 |
| 66.85.0.0/16 | United States (84%) | 5 | 55 | 58 |
| 66.88.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.90.0.0/16 | United States (86%) | 2 | 4 | 29 |
| 66.91.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.92.0.0/16 | United States (81%) | 12 | 51 | 127 |
| 66.93.0.0/16 | United States (91%) | 8 | 34 | 112 |
| 66.94.0.0/16 | United States (100%) | 1 | 9 | 21 |
| 66.95.0.0/16 | United States (54%) | 5 | 8 | 13 |
| 66.96.0.0/16 | United States (67%) | 5 | 18 | 24 |
| 66.97.0.0/16 | United States (81%) | 4 | 39 | 59 |
| 66.98.0.0/16 | Dominican Republic (64%) | 3 | 5 | 11 |
| 66.99.0.0/16 | United States (100%) | 1 | 6 | 11 |
| 66.100.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 66.102.0.0/16 | United States (62%) | 5 | 20 | 45 |
| 66.103.0.0/16 | United States (81%) | 3 | 16 | 21 |
| 66.104.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 66.108.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.109.0.0/16 | United States (100%) | 1 | 16 | 21 |
| 66.110.0.0/16 | United States (89%) | 3 | 11 | 28 |
| 66.111.0.0/16 | United States (70%) | 5 | 19 | 40 |
| 66.112.0.0/16 | United States (88%) | 3 | 11 | 25 |
| 66.113.0.0/16 | United States (97%) | 2 | 14 | 31 |
| 66.114.0.0/16 | United States (82%) | 4 | 13 | 28 |
| 66.115.0.0/16 | United States (100%) | 1 | 16 | 44 |
| 66.116.0.0/16 | United States (100%) | 1 | 9 | 15 |
| 66.117.0.0/16 | United States (100%) | 1 | 19 | 38 |
| 66.118.0.0/16 | United States (62%) | 12 | 39 | 42 |
| 66.119.0.0/16 | United States (74%) | 4 | 22 | 34 |
| 66.120.0.0/16 | United States (100%) | 1 | 3 | 5 |
| 66.126.0.0/16 | United States (100%) | 1 | 4 | 8 |
| 66.127.0.0/16 | United States (100%) | 1 | 3 | 4 |
| 66.128.0.0/16 | United States (93%) | 3 | 20 | 29 |
| 66.129.0.0/16 | United States (56%) | 3 | 14 | 36 |
| 66.130.0.0/16 | Canada (100%) | 1 | 1 | 1 |
| 66.132.0.0/16 | United States (52%) | 6 | 20 | 52 |
| 66.133.0.0/16 | United States (43%) | 3 | 9 | 30 |
| 66.134.0.0/16 | United States (67%) | 4 | 6 | 15 |
| 66.135.0.0/16 | United States (80%) | 2 | 8 | 20 |
| 66.136.0.0/16 | United States (100%) | 1 | 3 | 5 |
| 66.138.0.0/16 | United States (100%) | 1 | 3 | 4 |
| 66.139.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 66.140.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 66.141.0.0/16 | United States (100%) | 1 | 3 | 4 |
| 66.142.0.0/16 | United States (100%) | 1 | 4 | 5 |
| 66.143.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 66.144.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.146.0.0/16 | United States (97%) | 2 | 10 | 32 |
| 66.147.0.0/16 | United States (90%) | 2 | 7 | 10 |
| 66.148.0.0/16 | United States (100%) | 1 | 6 | 11 |
| 66.149.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.150.0.0/16 | United States (91%) | 3 | 29 | 57 |
| 66.151.0.0/16 | United States (96%) | 2 | 27 | 52 |
| 66.152.0.0/16 | United States (69%) | 2 | 8 | 16 |
| 66.153.0.0/16 | United States (100%) | 1 | 1 | 12 |
| 66.154.0.0/16 | United States (80%) | 3 | 7 | 10 |
| 66.155.0.0/16 | Canada (71%) | 2 | 3 | 7 |
| 66.156.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.158.0.0/16 | United States (85%) | 2 | 9 | 20 |
| 66.159.0.0/16 | United States (85%) | 2 | 17 | 26 |
| 66.160.0.0/16 | United States (88%) | 3 | 16 | 34 |
| 66.161.0.0/16 | United States (100%) | 1 | 5 | 8 |
| 66.162.0.0/16 | United States (100%) | 1 | 13 | 30 |
| 66.163.0.0/16 | United States (75%) | 2 | 18 | 24 |
| 66.164.0.0/16 | United States (100%) | 1 | 1 | 14 |
| 66.165.0.0/16 | United States (85%) | 2 | 10 | 20 |
| 66.166.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.167.0.0/16 | United States (86%) | 6 | 16 | 42 |
| 66.168.0.0/16 | United States (100%) | 1 | 3 | 4 |
| 66.169.0.0/16 | United States (100%) | 1 | 2 | 2 |
| 66.170.0.0/16 | United States (94%) | 2 | 17 | 31 |
| 66.171.0.0/16 | United States (70%) | 3 | 21 | 27 |
| 66.172.0.0/16 | United States (100%) | 1 | 8 | 18 |
| 66.173.0.0/16 | United States (100%) | 1 | 3 | 8 |
| 66.174.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.175.0.0/16 | United States (91%) | 4 | 12 | 33 |
| 66.176.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.177.0.0/16 | United States (100%) | 1 | 2 | 4 |
| 66.178.0.0/16 | Luxembourg (58%) | 4 | 9 | 26 |
| 66.179.0.0/16 | United States (62%) | 8 | 31 | 76 |
| 66.180.0.0/16 | United States (97%) | 2 | 23 | 34 |
| 66.181.0.0/16 | United States (94%) | 2 | 11 | 16 |
| 66.182.0.0/16 | United States (100%) | 1 | 7 | 13 |
| 66.183.0.0/16 | Canada (100%) | 1 | 1 | 1 |
| 66.184.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.185.0.0/16 | United States (65%) | 3 | 19 | 34 |
| 66.186.0.0/16 | United States (84%) | 4 | 18 | 37 |
| 66.187.0.0/16 | United States (92%) | 2 | 31 | 39 |
| 66.188.0.0/16 | United States (100%) | 1 | 1 | 2 |
| 66.189.0.0/16 | United States (100%) | 1 | 4 | 9 |
| 66.190.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 66.191.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 66.192.0.0/16 | United States (100%) | 1 | 19 | 48 |
| 66.193.0.0/16 | United States (100%) | 1 | 23 | 48 |
| 66.194.0.0/16 | United States (98%) | 2 | 27 | 54 |
| 66.195.0.0/16 | United States (98%) | 2 | 17 | 46 |
| 66.196.0.0/16 | United States (100%) | 1 | 6 | 11 |
| 66.197.0.0/16 | United States (100%) | 1 | 14 | 25 |
| 66.198.0.0/16 | United States (88%) | 4 | 14 | 24 |
| 66.199.0.0/16 | United States (73%) | 2 | 16 | 33 |
| 66.200.0.0/16 | United States (50%) | 2 | 2 | 2 |
| 66.201.0.0/16 | El Salvador (29%) | 5 | 8 | 21 |
| 66.202.0.0/16 | United States (100%) | 1 | 4 | 7 |
| 66.203.0.0/16 | United States (71%) | 7 | 24 | 28 |
| 66.204.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.205.0.0/16 | United States (78%) | 3 | 21 | 27 |
| 66.206.0.0/16 | United States (97%) | 2 | 16 | 33 |
| 66.207.0.0/16 | United States (76%) | 2 | 21 | 50 |
| 66.208.0.0/16 | United States (98%) | 2 | 28 | 83 |
| 66.209.0.0/16 | United States (93%) | 2 | 17 | 27 |
| 66.210.0.0/16 | United States (100%) | 1 | 6 | 23 |
| 66.211.0.0/16 | United States (100%) | 1 | 14 | 23 |
| 66.212.0.0/16 | United States (71%) | 9 | 24 | 34 |
| 66.213.0.0/16 | United States (100%) | 1 | 7 | 9 |
| 66.214.0.0/16 | United States (100%) | 1 | 2 | 5 |
| 66.215.0.0/16 | United States (100%) | 1 | 2 | 4 |
| 66.216.0.0/16 | United States (100%) | 1 | 9 | 18 |
| 66.217.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.218.0.0/16 | United States (100%) | 1 | 17 | 22 |
| 66.219.0.0/16 | United States (100%) | 1 | 11 | 21 |
| 66.220.0.0/16 | United States (88%) | 3 | 24 | 34 |
| 66.221.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.222.0.0/16 | United States (89%) | 2 | 2 | 9 |
| 66.223.0.0/16 | United States (71%) | 2 | 9 | 21 |
| 66.224.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.225.0.0/16 | United States (76%) | 6 | 24 | 58 |
| 66.226.0.0/16 | United States (48%) | 4 | 11 | 21 |
| 66.227.0.0/16 | United States (59%) | 3 | 15 | 39 |
| 66.228.0.0/16 | United States (56%) | 5 | 17 | 18 |
| 66.229.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.230.0.0/16 | United States (75%) | 2 | 7 | 8 |
| 66.231.0.0/16 | United States (74%) | 4 | 26 | 53 |
| 66.232.0.0/16 | United States (92%) | 5 | 23 | 52 |
| 66.234.0.0/16 | United States (73%) | 6 | 20 | 41 |
| 66.235.0.0/16 | United States (89%) | 4 | 23 | 38 |
| 66.236.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 66.238.0.0/16 | United States (89%) | 2 | 5 | 9 |
| 66.239.0.0/16 | United States (100%) | 1 | 3 | 4 |
| 66.240.0.0/16 | United States (75%) | 2 | 6 | 8 |
| 66.241.0.0/16 | United States (85%) | 2 | 10 | 20 |
| 66.242.0.0/16 | United States (96%) | 2 | 18 | 27 |
| 66.243.0.0/16 | United States (100%) | 1 | 10 | 15 |
| 66.244.0.0/16 | Canada (56%) | 2 | 14 | 27 |
| 66.245.0.0/16 | United States (79%) | 4 | 12 | 14 |
| 66.246.0.0/16 | United States (93%) | 2 | 5 | 14 |
| 66.247.0.0/16 | United States (100%) | 1 | 2 | 3 |
| 66.248.0.0/16 | United States (76%) | 4 | 26 | 33 |
| 66.249.0.0/16 | United States (59%) | 8 | 21 | 49 |
| 66.250.0.0/16 | United States (94%) | 2 | 7 | 17 |
| 66.251.0.0/16 | United States (82%) | 3 | 11 | 28 |
| 66.252.0.0/16 | United States (96%) | 2 | 17 | 26 |
| 66.253.0.0/16 | United States (84%) | 9 | 33 | 87 |
| 66.254.0.0/16 | Canada (55%) | 2 | 10 | 22 |
| 66.255.0.0/16 | United States (92%) | 2 | 8 | 13 |