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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 30 September 2022 the world's worst botnet infected Autonomous System Numbers are:
1
AS4134
China_Telecom_(ChinaNet)
Number of Bots: 555834

2
AS16509
AMAZON-02
Number of Bots: 342780

3
AS4837
China_Unicom
Number of Bots: 217349

4
AS45609
Bharti Airtel Ltd. AS for GPRS Service
Number of Bots: 154626

5
AS36947
Telecom_Algeria
Number of Bots: 117288

6
AS7713
PT_Telekomunikasi_Indonesia
Number of Bots: 100155

7
AS14618
NAME_NO_LONGER_AVAILABLE
Number of Bots: 86221

8
AS24560
Bharti_Airtel_Ltd._Telemedia_Services
Number of Bots: 73088

9
AS16135
Turkcell Iletisim Hizmetleri A.s.
Number of Bots: 64501

10
AS23969
TOT Public Company Limited
Number of Bots: 59203

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