Static DHCP address fail

Hi, I have a RT-3200 with FW 380.57 all was working fine until I decided to set my NAS,Printer,TV as static IP.
now when I ping them by name my request exit from the LAN and goes to the internet returning with a 98.xx.xx.xx ip .

I don't understand what can be wrong , also i will like to block all DNS request going to the internet directly is it possible ?

Thanks