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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 2019 the world's worst botnet infected ISPs are:
1
chinanet.cn.net Number of Bots: 1136069

2
vnnic.net.vn Number of Bots: 989778

3
tedata.net Number of Bots: 967445

4
amazon.com Number of Bots: 702783

5
airtel.in Number of Bots: 645490

6
sancharnet.in Number of Bots: 560851

7
cnc-noc.net Number of Bots: 281333

8
algerietelecom.dz Number of Bots: 280191

9
chinamobile.com Number of Bots: 260407

10
ptcl.net.pk Number of Bots: 255990

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