Error 3004 with iPhone 4

[becauseoftacos]

Hello, I need some help with my itunes, I am trying to restore 3 iphones, and with all of them, I get this error. I won't have internet for a while from the 2nd so I really need help.

I have flushed the DNS cache, but it hasn't done anything.

 

[confucious]

Sounds like a network issue to me.
Do you have a good network connection with no repeaters or anything?