15.164.195.142
ec2-15-164-195-142.ap-northeast-2.compute.amazonaws.com
15.164.246.31
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15.165.169.52
ec2-15-165-169-52.ap-northeast-2.compute.amazonaws.com
3.37.110.223
ec2-3-37-110-223.ap-northeast-2.compute.amazonaws.com

kr1-aspmx1.worksmobile.com.
kr1-aspmx2.worksmobile.com.