The Spamhaus Project
  Blocklist Removal Center
About Spamhaus  |  FAQs  |  News Blog   
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 18 December 2018 the world's worst botnet infected ISPs are:
1 Number of Bots: 1107170

2 Number of Bots: 1054727

3 Number of Bots: 909943

4 Number of Bots: 706894

5 Number of Bots: 391314

6 Number of Bots: 340165

7 Number of Bots: 304013

8 Number of Bots: 280544

9 Number of Bots: 260737

10 Number of Bots: 255707

© 1998-2018 The Spamhaus Project Ltd. All rights reserved.
Legal  |  Privacy