A listing in DroneBL is NOT always related to spam. But in most cases because of an open proxy !!!
Details about 3.91.34.35
Country: United States of America (US)
Reverse: ec2-3-91-34-35.compute-1.amazonaws.com
Autonomous System Number: AS14618
Lookup results for 3.91.34.35
No specific incidents regarding 3.91.34.35 were found in DroneBL's incident tracking system. This means that your IP is not listed in DroneBL.