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).
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| The 10 Worst Botnet ASNs |
| As of 17 May 2021 the world's worst botnet infected Autonomous System Numbers are: |
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1
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AS4134
China Telecom (ChinaNet)
|
Number of Bots: 570416 |
|
2
|
AS16509
AMAZON-02
|
Number of Bots: 359439 |
|
3
|
AS45609
Bharti Airtel Ltd. AS for GPRS Service
|
Number of Bots: 289569 |
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4
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AS58224
Iran Telecommunication Company PJS
|
Number of Bots: 162761 |
|
5
|
AS4837
China Unicom
|
Number of Bots: 160881 |
|
6
|
AS36947
Telecom Algeria
|
Number of Bots: 131086 |
|
7
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AS197207
Mobile Communication Company of Iran PLC
|
Number of Bots: 117338 |
|
8
|
AS7713
PT Telekomunikasi Indonesia
|
Number of Bots: 107459 |
|
9
|
AS45271
Idea Cellular Limited
|
Number of Bots: 103237 |
|
10
|
AS44244
Iran Cell Service and Communication Company
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Number of Bots: 95866 |
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