alt Hacker Newsi chose gopher port just as an example. try with any other service name mapped to a port number from /etc/services and the result will be the same. the OP's goal was to use many http/https services, so we are talking about many http(s) services.
i just wanted to make the point that even if you have service names in /etc/services, it is not possible to use that names easily to host/access http(s) services.
The names are the kind of servers that listen on those ports (by default) like ssh, telnet, http, and smtp. They are not subdomains or for URI parsing.