Help: Assign sitename to IP in DNS

Hay,
I want assign site to local site in my network
example
i have local site with ip 10.0.0.100
i want any one type http://www.film.com to go directly to these pc 10.0.0.100
I made rule in DNS and its works fine
but the prblem i use Hotspot and if any one type http://www.film.com without login its works with him.
Is there any way to avoide these problem?
Thanks

is 10.0.0.100 in your hotspot’s wallet-garden? or maybe in the same subnet as client?

My hotspot server 10.0.0.1
My web server (Local site) 10.0.0.100
All in same subnet 255.255.254.0
And i dont but anything in wallet-Garden

if your users are in the same subnet as web server, then you cannot block access to that server

My hotspot server 10.0.0.1
My web server (Local site) 10.0.0.100
All in same subnet 255.255.254.0
And i dont but anything in wallet-Garden
My hotspot server 10.0.0.1
My web server (Local site) 10.0.0.100
All in same subnet 255.255.254.0
And i dont but anything in wallet-Garden

If i change the webserver subnet to 255.0.0.0 without changing the IP
Is these right?

if you change server subnet to 255.255.255.255, it could help a bit