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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 15 October 2019 the world's worst botnet infected Autonomous System Numbers are:
1
AS4134
No.31/Jin-rong Street
Number of Bots: 1033369

2
AS45609
Bharti Airtel Ltd. AS for GPRS Service
Number of Bots: 832598

3
AS9829
National Internet Backbone
Number of Bots: 651180

4
AS8452
TE-AS
Number of Bots: 570529

5
AS45899
VNPT Corp
Number of Bots: 491592

6
AS45595
Pakistan Telecom Company Limited
Number of Bots: 324114

7
AS36947
Telecom Algeria
Number of Bots: 309169

8
AS44244
Iran Cell Service and Communication Company
Number of Bots: 282898

9
AS45271
Idea Cellular Limited
Number of Bots: 272389

10
AS4837
CHINA UNICOM China169 Backbone
Number of Bots: 266557

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