Using canonical names for cloud instances

I am using these public cloud services:


Product
 Service Provider
Amazon Elastic Compute Cloud (EC2)
 Amazon Web Services, Inc. (AWS)
Windows Azure Linux Virtual Machines
 Microsoft Corporation
Rackspace Cloud Servers
 Rackspace, U.S. Inc.
IBM SmartCloud®
 IBM Corporation


My canonical names:


Name Type Value
browser.cloud.raytrek.com. CNAME ec2-23-23-55-35.compute-1.amazonaws.com.
thor.cloud.raytrek.com. CNAME 108-166-117-29.static.cloud-ips.com.
smart.cloud.raytrek.com. CNAME vhost0147.dc1.on.ca.compute.ihost.com.
azure.cloud.raytrek.com. CNAME ray-tech.cloudapp.net.
plp.cloud.raytrek.com. CNAME ec2-54-235-237-179.compute-1.amazonaws.com.
orion.cloud.raytrek.com. CNAME ec2-54-242-199-219.compute-1.amazonaws.com.

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