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

Network Threat Summary

AS37963 (Hangzhou Alibaba Advertising Co.,Ltd.) has 148,202 malicious IP addresses with 1,514,715 abuse reports across 1 countries. First activity recorded 2022-07-04, most recent activity 2026-09-20.

Threat Profile: The primary attack categories observed from this network are reconnaissance, reputation low, 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, SG.

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

• Reconnaissance 465,987 reports
• Reputation Low 169,175 reports
• Aggregated Threat 74,881 reports
• Malware Infrastructure 59,084 reports
• Malware C2 24,950 reports

Top Affected Countries

• CN 1,324,848 reports
• SG 3 reports

Most Reported IPs

• 8.134.157.132 955 reports
• 8.152.209.0 931 reports
• 8.152.99.77 921 reports
• 8.138.155.88 914 reports
• 8.134.159.4 911 reports

Lookup an IP or Network

Check any IP address for threat intelligence or browse other ASNs.

Access ASN Intelligence via API

Integrate AS37963 threat data into your security stack with our REST API.

See how we classify and verify threats →