I am sorry if this is posted in the wrong project, I was not sure where to post it.

I am unable to resolve maven.mcmoddev.com. It appears that the name servers listed on the domain (NS1.CYBERKAT.EU - NS5.CYBERKAT.EU) no longer are answering DNS queries.

Hello, this is a known issue. The cyberkat.eu name server was suspended on the 1st because Brexit finally went through and the domain was registered to a UK address. I don't control either domain and expect there to be some serious down time for both.

For now you can use https://mmdmaven.blamejared.com/ to access the same server.