You can register a .no domain through a broker similar to how whois privacy at most registrars works: the broker is the registrant but then affords you full control of the domain.
That sounds like a bad idea. If your site is successful the broker could jack up the price to let you keep control. Better to stick to registering domains directly through a normal registrar. And if you are not in a position to create a Norwegian enkeltpersonsforetak or aksjeselskap, then why bother with a .no domain?