SpamTitan Cloud consists of different server clusters, one of which you will be using.

You can determine which cluster you are using by looking at the MX records for your domain. Check your MX record using MXToolBox.

Your MX records will contain one of the clusters listed the table below and the columns to the right shows the corresponding IP range and hostname:

Cluster

IP Range

Hostname

cloud1.spamtitan.com

cloud2.spamtitan.com

96.127.141.203

198.20.73.147 

198.20.89.94 

cloudb.spamtitan.com

cloudc.spamtitan.com

cloudd.spamtitan.com

cloud3.spamtitan.com

cloud4.spamtitan.com

107.6.152.251 

108.178.61.211 

cloude.spamtitan.com

cloudf.spamtitan.com

cloud5.spamtitan.com

cloud6.spamtitan.com

52.10.98.167 

52.26.55.167 

52.32.254.113 

cloudg.spamtitan.com

cloudh.spamtitan.com

cloudi.spamtitan.com

cloud7.spamtitan.com

cloud8.spamtitan.com

13.58.65.21 

13.58.8.62 

52.15.128.102 

cloudj.spamtitan.com

cloudk.spamtitan.com

cloudl.spamtitan.com

cloud9.spamtitan.com

cloud10.spamtitan.com

35.180.20.210

35.180.150.243

52.47.152.182

cloudm.spamtitan.com

cloudn.spamtitan.com

cloudo.spamtitan.com

cloud11.spamtitan.com

cloud12.spamtitan.com

3.19.87.175

18.217.94.247

18.223.46.43

cloudp.spamtitan.com

cloudq.spamtitan.com

cloudr.spamtitan.com

cloud13.spamtitan.com

cloud14.spamtitan.com

52.63.80.202

3.24.29.103

13.210.152.63

clouds.spamtitan.com

cloudt.spamtitan.com

cloudu.spamtitan.com

cloud15.spamtitan.com

cloud16.spamtitan.com

18.188.207.172

18.190.56.214

18.216.101.235

cloudv.spamtitan.com

cloudw.spamtitan.com

cloudx.spamtitan.com