I was interested to learn about 'no-cors' where you get a sparse response. Was hoping to use it to find out if a web page was being accessed from a client's int

I was interested to learn about 'no-cors' where you get a sparse response. Was hoping to use it to find out if a web page was being accessed from a client's internal network or not (by trying to get a page that only existed there and inspecting the response) In the end I didn't get to find out if it worked or not due to boring reasons.