1
1
2


1
2
1
3

1
3
3
3
5

1
6
1
7
1

2
0
9
4
0

2
5
1
5
2

3
1
1
2
2

3
9
1
2
2

4
7
6
8
0

4
7
7
2
0

5
6
7
6
7
1
9
6
7
3
7
AS112 Reverse DNS 112
HEAnet 1213
Cloudflare 13335
Strencom 16171
Akamai Technologies 20940
RIPE NCC k-root server 25152
Viatel 31122
Blacknight 39122
BBnet 47680
CloudCIX 47720
Netmore Ireland 56767
Airwave 196737