Please run these 2 commands and then try to ping host name again:
Please change
DNS server to 192.168.1.200 so that the DNS server is
the same as the Gateway and see if that helps.
what is your router/modem model?
I am asking this because if the router provides
DHCP service you can provide static IP address by
DHCP Reservation. Basically you set the router to always assign the same IP address to the same computer. This will make your administration easier in the future because you can assign both dynamic and static address from one place instead of going to each machine.