In summer 2016 I provided brief analysis of open DNS-resolvers (DDoS-attacks type DNS Amplification sources) by countries. Using the same shodan I decided to make NY report and to calculate the dynamics. The year is new but security holes are old.
So, NY report for DNS with open recursion has such behavior as to June one in integral TOP-10 for the world:
| 2016 | 2017 | Fixed, % | |
| China | 1066365 | 604080 | 43,35 |
| Taiwan | 308033 | 244719 | 20,55 |
| USA | 254265 | 206442 | 18,81 |
| Korea | 252341 | 232386 | 7,91 |
| Russia | 172123 | 131060 | 23,86 |
| India | 160751 | 115616 | 28,08 |
| Brazil | 155392 | 155889 | -0,32 |
| Turkey | 97970 | 74572 | 23,88 |
| Japan | 58950 | 49473 | 16,08 |
| Italy | 46168 | 54122 | -17,23 |
