Checking Whether the CNAME Record Has Taken Effect
The length of time before the CNAME record takes effect depends on the DNS provider. To check whether a CNAME record has taken effect:
Open the command line interface that comes with Windows and run the following command:
nslookup -qt=cname Acceleration domain name
If the CNAME is displayed, the CNAME record has taken effect.
Now CDN acceleration has been enabled.