I have told my domain registrar to set my domain like this:
www.domain.com -> IP1
domain.com -> A record IP2

www.domain.com works properly, but non www returns %20 before the real url www.domain.com
so it look like %20www.domain.com in the address bar.

What can I do to make this work? I do not have access to the DNS settings (have to tell registrar what I want) or the root folder where is my website so the solution must be with the DNS via registrar.

Thank you!