Webhook host URL

API and Webhooks
1

I have added endpoint in webhooks and I am getting a response on that public URL successfully.

I just want one detail that, from which host or server zoom will send a request to my specified URL? 

I want to configure the hostname in my system for security reasons.

2

I  have added the  endpoint in webhooks too, but I  get nothing on my endpoint URL.

What kind of URL do you use?