AS37963 — Hangzhou Alibaba Advertising Co.,Ltd. Threat Intelligence

Network Threat Summary

AS37963 (Hangzhou Alibaba Advertising Co.,Ltd.) has 72,407 malicious IP addresses with 652,086 abuse reports across 1 countries. First activity recorded 2022-07-04, most recent activity 2026-04-11.

Threat Profile: The primary attack categories observed from this network are suspicious activity, severe abuse, aggregated threat. This autonomous system is among the most prolific threat sources globally, with an exceptionally high concentration of malicious IP addresses. Affected countries include CN.

Risk Assessment: CRITICAL - This autonomous system is a major source of malicious activity, ranking in the top 1% of threat networks globally. Consider blocking the entire ASN or implementing strict rate limiting.

Top Attack Categories

• Suspicious Activity 315,712 reports
• Severe Abuse 114,049 reports
• Aggregated Threat 62,972 reports
• Malware C2 61,922 reports
• Moderate Threat 24,105 reports

Top Affected Countries

• CN 651,376 reports

Most Reported IPs

• 39.96.156.128 958 reports
• 120.55.166.91 402 reports
• 47.96.58.238 342 reports
• 59.110.149.39 296 reports
• 8.134.159.4 296 reports

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