private addresses (cont.) - by ASes


clients belong to 3309 origin ASes
20 ASes cause more than 50% of RFC1918 PTR updates
top offenders:
4134 Chinalink (China)
3352 Ibernet (Spain)
7132 SW Bell (USA)
5673 Pac Bell (USA)
5676 Pac Bell (USA)
4813 China Telecom (Guandong, China)
4812 China Telecom (Shanghai, China)
852  Telus (Canada)
6128 Cablevision (USA)
2828 XO (USA)
1142 Road Runner (USA)
7843 Adelphia (USA)
4760 Netvigator (Hong Kong)
2914  Verio (USA)
1221  Telstra (Australia)
11509 Pajo (USA)
4436  SantaCruz Community I't (USA)
11426 Road Runner (USA)
10994 Time Warner (USA)
2548 Business Internet (USA)