AS3257 — GTT Communications Inc. Threat Intelligence

Network Threat Summary

AS3257 (GTT Communications Inc.) has 56,135 malicious IP addresses with 207,470 abuse reports across 17 countries. First activity recorded 2022-08-26, most recent activity 2026-09-07.

Threat Profile: The primary attack categories observed from this network are professional threat, suspicious activity, malware c2. This autonomous system is among the most prolific threat sources globally, with an exceptionally high concentration of malicious IP addresses. Affected countries include US, CA, NL.

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

• Professional Threat 104,592 reports
• Suspicious Activity 12,227 reports
• Malware C2 7,196 reports
• Aggregated Threat 6,493 reports
• Spam 3,215 reports

Top Affected Countries

• US 46,422 reports
• CA 8,682 reports
• NL 8,361 reports

Most Reported IPs

• 66.54.169.3 592 reports
• 185.68.179.108 527 reports
• 66.54.140.166 519 reports
• 154.14.23.208 458 reports
• 212.23.60.144 440 reports

Lookup an IP or Network

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

Access ASN Intelligence via API

Integrate AS3257 threat data into your security stack with our REST API.

See how we classify and verify threats →