A listing in DroneBL is NOT always related to spam. But in most cases because of an open proxy !!!
Details about 52.231.88.214
Country: United States of America (US)
Reverse: none
Autonomous System Number: AS8075
Lookup results for 52.231.88.214
No specific incidents regarding 52.231.88.214 were found in DroneBL's incident tracking system. This means that your IP is not listed in DroneBL.