A listing in DroneBL is NOT always related to spam. But in most cases because of an open proxy !!!
Details about 3.239.87.140
Country: United States of America (US)
Reverse: ec2-3-239-87-140.compute-1.amazonaws.com
Autonomous System Number: AS14618
Lookup results for 3.239.87.140
No specific incidents regarding 3.239.87.140 were found in DroneBL's incident tracking system. This means that your IP is not listed in DroneBL.