Spamhaus
The Spamhaus Project
  Blocklist Removal Center
About Spamhaus  |  FAQs  |  News Blog   
The Top 10 Worst

The World's Worst Botnet ASNs

Autonomous System Numbers (ASNs) in this chart have the highest number of detected spam-bots as listed in the Spamhaus XBL zone, sorted by ASN. See one of the below links for a definition of ASN. 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 ASN

CBL breakdown by ASN Traffic

CBL breakdown by ASN 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 ASNs
As of 16 June 2019 the world's worst botnet infected Autonomous System Numbers are:
1
AS4134
No.31/Jin-rong Street
Number of Bots: 956955

2
AS9829
National Internet Backbone
Number of Bots: 614097

3
AS45899
VNPT Corp
Number of Bots: 485209

4
AS16509
Amazon.com/ Inc.
Number of Bots: 444126

5
AS45609
Bharti Airtel Ltd. AS for GPRS Service
Number of Bots: 406675

6
AS8452
TE-AS
Number of Bots: 267659

7
AS36947
Telecom Algeria
Number of Bots: 255375

8
AS7552
Viettel Group
Number of Bots: 245252

9
AS4837
CHINA UNICOM China169 Backbone
Number of Bots: 239064

10
AS24560
Bharti Airtel Ltd./ Telemedia Services
Number of Bots: 227910

© 1998-2019 The Spamhaus Project Ltd. All rights reserved.
Legal  |  Privacy