13.56.102.227
ec2-13-56-102-227.us-west-1.compute.amazonaws.com
50.18.132.111
ec2-50-18-132-111.us-west-1.compute.amazonaws.com

alln-mx-01.cisco.com.
ams-mx-01.cisco.com.
rcdn-mx-01.cisco.com.
rtp-mx-01.cisco.com.