Ethernet DHCP issue

Welcome! Sorry to day you are intermingling the two, they are not the same. I have my router running as a DHCP server which gives my Arduinos there local IP address. The IP addresses you are listing are in: New York City, California, and Rheinland-Pfalz so I do not have a clue how you are getting them unless your router is passing them on to your project. You need your DHCP to give you an IP for your local network. It will probably be 192,168.?.?, the DNS addresses are not accessible without an internet connection.