What kind of blockage did you set up? A hijacking 404/403 HTTP response, or are you dropping IP packets to the www.apple.com IP addresses? If your router blocking is implemented on the HTTP level, then obviously you would see the same result as everyone just did when that URL returned 404.

I'd be more interested in learning how iOS reacts when TCP (HTTP) connections to that URL time out, or are treated as a closed port.