A listing in DroneBL is NOT always related to spam. But in most cases because of an open proxy !!!
Details about 218.64.93.233
Country: China (CN)
Reverse: 233.93.64.218.broad.ja.jx.dynamic.163data.com.cn
Autonomous System Number: AS4134
Lookup results for 218.64.93.233
No specific incidents regarding 218.64.93.233 were found in DroneBL's incident tracking system. This means that your IP is not listed in DroneBL.