A listing in DroneBL is NOT always related to spam. But in most cases because of an open proxy !!!
Details about 123.21.28.82
Country: Vietnam (VN)
Reverse: none
Autonomous System Number: AS45899
Lookup results for 123.21.28.82
No specific incidents regarding 123.21.28.82 were found in DroneBL's incident tracking system. This means that your IP is not listed in DroneBL.