So as Talona has said above some simple trouble shooting may help, If you're willing to try the following a trouble shooting step it may help us zero in on the problem.
I would try running a repeating ping on the realm-list address by opening up your windows command console and typing in (without the quotes) "Ping -t 192.223.25.140" (you can use the shortcut ctrl + c) to stop the repeated ping but see how many pings actually reach the server before they stop or are unable to be sent, this may be your Internets connection to our Vps.
I would try running a repeating ping on the realm-list address by opening up your windows command console and typing in (without the quotes) "Ping -t 192.223.25.140" (you can use the shortcut ctrl + c) to stop the repeated ping but see how many pings actually reach the server before they stop or are unable to be sent, this may be your Internets connection to our Vps.