Yes, you can. A sub-domain is when you have it set up apps.yoursite.com vs. yoursite.com

You will need to Add an A Record 

Note: (only use this when adding a sub-domain like apps.yoursite.com) If you are not using a sub-domain please view the directions here

  1. In the DNS Zone File, click Add Record.

  2. From the Record type list, select A (Host).

  3. Complete the following fields:

    • Host Name — Enter the hostname the A record links to.  This would be apps or mobile or some other PREFIX used before your url

    • Points to IP Address — Enter the IP 54.244.117.9

    • TTL — Don't change the default it currently has.

  4. Click Save, and then click Save Changes. The new A record

  5.