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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.
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 19 October 2021 the world's worst botnet infected Autonomous System Numbers are:
1
AS16509
AMAZON-02
Number of Bots: 387101

2
AS4134
China_Telecom_(ChinaNet)
Number of Bots: 379900

3
AS45609
Bharti Airtel Ltd. AS for GPRS Service
Number of Bots: 218982

4
AS7713
PT Telekomunikasi Indonesia
Number of Bots: 130885

5
AS36947
Telecom Algeria
Number of Bots: 119422

6
AS4837
China Unicom
Number of Bots: 108380

7
AS23969
TOT Public Company Limited
Number of Bots: 82103

8
AS24560
Bharti Airtel Ltd., Telemedia Services
Number of Bots: 77441

9
AS18403
The_Corporation_for_Financing_&_Promoting_Technology
Number of Bots: 74364

10
AS45899
VNPT_Corp
Number of Bots: 64057

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