Hst:hosts question

How can I check if the nodes under hst:hosts are being used? I see entries in my console but I am fairly certain that the application would continue to run the same if I deleted all the existing hst:hosts child nodes. I saw that these can be used for providing subdomains (crm.hostname.com) for example, but what other advantage is there of the hst:hosts nodes

Since the nodes would represent URLs by which you access channels, you could simply check what happens when you browse to them. Is it live then don’t delete,

Reference doc at https://documentation.bloomreach.com/library/concepts/hst-configuration-model/hosts-configuration.html