Spamhaus
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 04 December 2020 the world's worst botnet infected ISPs are:
1
chinanet.cn.net Number of Bots: 1171382

2
airtel.in Number of Bots: 489380

3
vnnic.net.vn Number of Bots: 403387

4
cnc-noc.net Number of Bots: 364184

5
rr.com Number of Bots: 321896

6
chinamobile.com Number of Bots: 164332

7
algerietelecom.dz Number of Bots: 162586

8
telkom.co.id Number of Bots: 149098

9
zylon.net Number of Bots: 147399

10
ntl.com Number of Bots: 121574

© 1998-2020 The Spamhaus Project SLU. All rights reserved.
Legal  |  Privacy