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The Top 10 Worst

The World's Worst Botnet ISPs

ISPs in this chart have the highest number of detected spam-bots as listed in the Spamhaus XBL zone. Most bots can be used for spam, phishing, click-fraud, DDoS and other malicious activities.

Many issues may relate to a country's bot density including technical, policy and socioeconomic factors.

Additional and more detailed statistics can be found at the Spamhaus CBL website:

CBL breakdown by Domain

CBL breakdown by Domain Traffic

CBL breakdown by Domain Infections


Source: Spamhaus (XBL) database. Data is compiled automatically every 24 hours from the XBL database using the number of currently listed bots for each network (ISP/NSP).
The 10 Worst Botnet ISPs
As of 22 April 2017 the world's worst botnet infected ISPs are:
1
chinanet.cn.net Number of Bots: 1047532

2
vnnic.net.vn Number of Bots: 533264

3
sancharnet.in Number of Bots: 529923

4
cnc-noc.net Number of Bots: 310252

5
airtel.in Number of Bots: 289826

6
ptcl.net.pk Number of Bots: 266156

7
rt.ru Number of Bots: 92328

8
mail.dci.co.ir Number of Bots: 88203

9
netservicos.com.br Number of Bots: 75885

10
telkom.co.id Number of Bots: 71283

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