Thanks Sarah.question was more into how we can create a custom dimension from the captured data. Your reply was more into how we can derive the host name from application and send it to analytics servers.

Hi,We wanted to create a new dimension in Adobe Analytics. Below is the use case,We have two dimensions - Referrer and Referring domain. Referrer gives the complete URL (document.referrer) where as Referring domain gives the parent domain. For example if the referrer is https://www-1.ibm.com/portal/...