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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 May 2017 the world's worst botnet infected ISPs are:
1
chinanet.cn.net Number of Bots: 805460

2
sancharnet.in Number of Bots: 580301

3
vnnic.net.vn Number of Bots: 400516

4
zylon.net Number of Bots: 341754

5
rt.ru Number of Bots: 315722

6
airtel.in Number of Bots: 261840

7
cnc-noc.net Number of Bots: 182411

8
brasiltelecom.net.br Number of Bots: 173838

9
telefonica.com.ar Number of Bots: 139214

10
telkom.co.id Number of Bots: 103374

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