A listing in DroneBL is NOT always related to spam. But in most cases because of an open proxy !!!

Details about 221.9.150.250

Country: China (CN)
Reverse: 250.150.9.221.adsl-pool.jlccptt.net.cn
Autonomous System Number: AS4837

Lookup results for 221.9.150.250

No specific incidents regarding 221.9.150.250 were found in DroneBL's incident tracking system. This means that your IP is not listed in DroneBL.