A listing in DroneBL is NOT always related to spam. But in most cases because of an open proxy !!!
Details about 187.66.161.14
Country: Brazil (BR)
Reverse: bb42a10e.virtua.com.br
Autonomous System Number: AS28573
Lookup results for 187.66.161.14
No specific incidents regarding 187.66.161.14 were found in DroneBL's incident tracking system. This means that your IP is not listed in DroneBL.