DNS Solution for Windows Dedicated Server

I have some website that is blocked for some reason and i need it unblocked. I have a windows dedicated virtual server that I am renting from a unmanaged server provider. I need to access a website from the server but it is blocked even if i use proxies. I think it is because of dns. I tried to test it through google dns and i think it worked. but because its a unmanaged server provider they do not help with technical support they asked me to hire someone else to help with that. Are you familiar with this? I tried to change settings before and lost access to the machine and thad to ask support to reset it when i was messing with network configuration This is what the support told me last time i reset the network configuration " in the future you'll have to load the server into sysrcd to attempt to modify the network config from outside of the OS // gather backups before reloading the server. please keep in mind that we're an unmanaged service provider. "