How to use nmap to find a web server on the network?

Question

Computer networks

For the sake of sporting interest, I wondered how many home hosters are in my network. How to scan the address range xxx.xxx.xxx.0-255 with the nmap utility for an open port 80?
And is it really possible to get a hat from the provider for this?

Answer 1

https://nmap.org/nsedoc/scripts/http-title.html

Answer 2

nmap –p 80 192.168.0.1-255
Well, it seems so, but I just googled it.