81.0.0.0/8
2,016 announced IP ranges across this /8. Select a /16 block below for its own breakdown and assigned ranges.
| Block | Top country | Countries | ASNs | Ranges |
|---|---|---|---|---|
| 81.0.0.0/16 | Czechia (54%) | 5 | 8 | 39 |
| 81.1.0.0/16 | Russia (79%) | 3 | 6 | 14 |
| 81.2.0.0/16 | Russia (53%) | 12 | 16 | 40 |
| 81.3.0.0/16 | Austria (42%) | 5 | 6 | 12 |
| 81.4.0.0/16 | Cyprus (53%) | 3 | 8 | 15 |
| 81.5.0.0/16 | United Kingdom (41%) | 6 | 11 | 17 |
| 81.6.0.0/16 | Poland (57%) | 4 | 9 | 14 |
| 81.7.0.0/16 | Lithuania (43%) | 4 | 7 | 14 |
| 81.8.0.0/16 | Turkey (67%) | 2 | 6 | 27 |
| 81.9.0.0/16 | Russia (91%) | 2 | 8 | 32 |
| 81.10.0.0/16 | Egypt (93%) | 2 | 2 | 15 |
| 81.11.0.0/16 | Germany (50%) | 2 | 2 | 2 |
| 81.12.0.0/16 | Iran (85%) | 2 | 15 | 40 |
| 81.13.0.0/16 | Russia (88%) | 2 | 4 | 8 |
| 81.14.0.0/16 | France (50%) | 2 | 2 | 2 |
| 81.15.0.0/16 | Poland (97%) | 3 | 24 | 61 |
| 81.16.0.0/16 | Austria (24%) | 17 | 31 | 37 |
| 81.17.0.0/16 | Ukraine (26%) | 11 | 26 | 39 |
| 81.18.0.0/16 | Russia (36%) | 15 | 23 | 39 |
| 81.19.0.0/16 | Russia (27%) | 9 | 24 | 30 |
| 81.20.0.0/16 | Russia (28%) | 9 | 20 | 25 |
| 81.21.0.0/16 | Cyprus (34%) | 15 | 22 | 35 |
| 81.22.0.0/16 | United States (24%) | 16 | 35 | 42 |
| 81.23.0.0/16 | Russia (66%) | 8 | 26 | 35 |
| 81.24.0.0/16 | Russia (32%) | 11 | 21 | 25 |
| 81.25.0.0/16 | Russia (33%) | 12 | 21 | 21 |
| 81.26.0.0/16 | Russia (32%) | 11 | 16 | 19 |
| 81.27.0.0/16 | Russia (26%) | 12 | 25 | 35 |
| 81.28.0.0/16 | United States (18%) | 12 | 19 | 22 |
| 81.29.0.0/16 | Russia (19%) | 12 | 23 | 36 |
| 81.30.0.0/16 | Russia (33%) | 16 | 28 | 43 |
| 81.31.0.0/16 | Iran (21%) | 20 | 37 | 48 |
| 81.32.0.0/16 | Spain (100%) | 1 | 1 | 1 |
| 81.45.0.0/16 | Spain (100%) | 1 | 3 | 4 |
| 81.46.0.0/16 | Spain (100%) | 1 | 2 | 2 |
| 81.48.0.0/16 | France (100%) | 1 | 1 | 1 |
| 81.52.0.0/16 | France (88%) | 3 | 6 | 17 |
| 81.53.0.0/16 | France (100%) | 1 | 1 | 1 |
| 81.56.0.0/16 | France (100%) | 1 | 1 | 1 |
| 81.58.0.0/16 | Netherlands (100%) | 1 | 1 | 1 |
| 81.59.0.0/16 | Netherlands (100%) | 1 | 2 | 2 |
| 81.60.0.0/16 | Spain (100%) | 1 | 2 | 3 |
| 81.61.0.0/16 | Spain (100%) | 1 | 1 | 1 |
| 81.62.0.0/16 | Switzerland (100%) | 1 | 1 | 1 |
| 81.64.0.0/16 | France (100%) | 1 | 1 | 1 |
| 81.68.0.0/16 | China (100%) | 1 | 1 | 1 |
| 81.72.0.0/16 | Italy (100%) | 1 | 1 | 1 |
| 81.74.0.0/16 | Italy (100%) | 1 | 2 | 4 |
| 81.76.0.0/16 | United Kingdom (100%) | 1 | 1 | 1 |
| 81.80.0.0/16 | France (100%) | 1 | 2 | 3 |
| 81.81.0.0/16 | Italy (100%) | 1 | 1 | 1 |
| 81.82.0.0/16 | Belgium (100%) | 1 | 1 | 1 |
| 81.84.0.0/16 | Portugal (100%) | 1 | 1 | 1 |
| 81.85.0.0/16 | United States (27%) | 15 | 30 | 33 |
| 81.86.0.0/16 | United Kingdom (100%) | 1 | 1 | 1 |
| 81.87.0.0/16 | United Kingdom (100%) | 1 | 1 | 1 |
| 81.88.0.0/16 | Germany (25%) | 11 | 19 | 28 |
| 81.89.0.0/16 | Russia (29%) | 7 | 18 | 24 |
| 81.90.0.0/16 | United Kingdom (29%) | 15 | 32 | 48 |
| 81.91.0.0/16 | Germany (18%) | 14 | 24 | 33 |
| 81.92.0.0/16 | Germany (31%) | 16 | 23 | 32 |
| 81.93.0.0/16 | United States (21%) | 11 | 15 | 24 |
| 81.94.0.0/16 | Russia (50%) | 8 | 20 | 36 |
| 81.95.0.0/16 | Poland (21%) | 16 | 28 | 39 |
| 81.96.0.0/16 | United Kingdom (100%) | 1 | 1 | 1 |
| 81.112.0.0/16 | Italy (100%) | 1 | 1 | 1 |
| 81.115.0.0/16 | Italy (100%) | 1 | 2 | 6 |
| 81.117.0.0/16 | Italy (100%) | 1 | 2 | 2 |
| 81.118.0.0/16 | Italy (100%) | 1 | 1 | 1 |
| 81.119.0.0/16 | Italy (100%) | 1 | 2 | 6 |
| 81.123.0.0/16 | Italy (100%) | 1 | 2 | 8 |
| 81.124.0.0/16 | Italy (100%) | 1 | 2 | 4 |
| 81.125.0.0/16 | Italy (100%) | 1 | 2 | 14 |
| 81.126.0.0/16 | Italy (91%) | 2 | 3 | 11 |
| 81.127.0.0/16 | Italy (100%) | 1 | 1 | 1 |
| 81.128.0.0/16 | United Kingdom (100%) | 1 | 1 | 1 |
| 81.160.0.0/16 | Hungary (100%) | 1 | 1 | 1 |
| 81.161.0.0/16 | Russia (20%) | 17 | 40 | 40 |
| 81.162.0.0/16 | Russia (41%) | 6 | 14 | 17 |
| 81.163.0.0/16 | Russia (36%) | 8 | 19 | 22 |
| 81.164.0.0/16 | Belgium (100%) | 1 | 1 | 1 |
| 81.166.0.0/16 | Norway (100%) | 1 | 1 | 2 |
| 81.167.0.0/16 | Norway (100%) | 1 | 1 | 1 |
| 81.168.0.0/16 | United Kingdom (57%) | 15 | 31 | 72 |
| 81.169.0.0/16 | Germany (80%) | 2 | 4 | 5 |
| 81.170.0.0/16 | Sweden (50%) | 2 | 2 | 2 |
| 81.171.0.0/16 | Netherlands (92%) | 2 | 5 | 13 |
| 81.172.0.0/16 | Spain (74%) | 5 | 21 | 27 |
| 81.173.0.0/16 | Netherlands (34%) | 10 | 20 | 29 |
| 81.174.0.0/16 | Italy (60%) | 3 | 4 | 5 |
| 81.175.0.0/16 | Norway (60%) | 3 | 4 | 5 |
| 81.176.0.0/16 | Russia (100%) | 1 | 1 | 1 |
| 81.177.0.0/16 | Russia (96%) | 2 | 12 | 25 |
| 81.178.0.0/16 | United Kingdom (100%) | 1 | 1 | 1 |
| 81.180.0.0/16 | Romania (81%) | 6 | 36 | 54 |
| 81.181.0.0/16 | Romania (89%) | 8 | 63 | 89 |
| 81.182.0.0/16 | Hungary (100%) | 1 | 1 | 1 |
| 81.184.0.0/16 | Spain (100%) | 1 | 1 | 1 |
| 81.185.0.0/16 | France (100%) | 1 | 1 | 1 |
| 81.186.0.0/16 | Sweden (33%) | 3 | 3 | 3 |
| 81.187.0.0/16 | United Kingdom (100%) | 1 | 2 | 8 |
| 81.188.0.0/16 | United States (100%) | 1 | 1 | 1 |
| 81.189.0.0/16 | Austria (100%) | 1 | 1 | 1 |
| 81.190.0.0/16 | Poland (100%) | 1 | 1 | 1 |
| 81.191.0.0/16 | Norway (100%) | 1 | 1 | 1 |
| 81.192.0.0/16 | Morocco (100%) | 1 | 1 | 19 |
| 81.193.0.0/16 | Portugal (100%) | 1 | 1 | 1 |
| 81.194.0.0/16 | France (100%) | 1 | 1 | 1 |
| 81.195.0.0/16 | Russia (100%) | 1 | 10 | 23 |
| 81.196.0.0/16 | Romania (100%) | 1 | 1 | 2 |
| 81.197.0.0/16 | Finland (100%) | 1 | 1 | 1 |
| 81.198.0.0/16 | Latvia (100%) | 1 | 7 | 20 |
| 81.199.0.0/16 | Israel (82%) | 7 | 14 | 57 |
| 81.200.0.0/16 | Russia (55%) | 9 | 22 | 31 |
| 81.201.0.0/16 | Netherlands (27%) | 10 | 16 | 22 |
| 81.202.0.0/16 | Spain (100%) | 1 | 1 | 1 |
| 81.203.0.0/16 | Japan (100%) | 1 | 1 | 1 |
| 81.204.0.0/16 | Netherlands (100%) | 1 | 1 | 1 |
| 81.208.0.0/16 | United States (67%) | 3 | 5 | 6 |
| 81.209.0.0/16 | Germany (95%) | 2 | 6 | 21 |
| 81.210.0.0/16 | Poland (50%) | 2 | 2 | 2 |
| 81.211.0.0/16 | Kazakhstan (60%) | 2 | 3 | 15 |
| 81.212.0.0/16 | Turkey (100%) | 1 | 1 | 3 |
| 81.213.0.0/16 | Turkey (100%) | 1 | 2 | 2 |
| 81.214.0.0/16 | Turkey (100%) | 1 | 1 | 1 |
| 81.215.0.0/16 | Turkey (100%) | 1 | 2 | 2 |
| 81.216.0.0/16 | EU (100%) | 1 | 1 | 1 |
| 81.217.0.0/16 | Austria (100%) | 1 | 1 | 1 |
| 81.218.0.0/16 | Israel (100%) | 1 | 2 | 10 |
| 81.219.0.0/16 | Poland (100%) | 1 | 1 | 1 |
| 81.220.0.0/16 | France (100%) | 1 | 1 | 1 |
| 81.221.0.0/16 | Switzerland (100%) | 1 | 1 | 1 |
| 81.222.0.0/16 | Russia (100%) | 1 | 7 | 34 |
| 81.223.0.0/16 | Austria (100%) | 1 | 1 | 1 |
| 81.224.0.0/16 | Sweden (100%) | 1 | 1 | 1 |
| 81.240.0.0/16 | Belgium (100%) | 1 | 1 | 1 |
| 81.248.0.0/16 | France (100%) | 1 | 1 | 3 |
| 81.252.0.0/16 | France (100%) | 1 | 3 | 4 |
| 81.253.0.0/16 | France (100%) | 1 | 2 | 2 |
| 81.254.0.0/16 | France (100%) | 1 | 1 | 1 |
| 81.255.0.0/16 | France (100%) | 1 | 4 | 5 |