Sonarscanner package not download for .net core

I am trying to execute the below command to install dotnet sonar scanner for .net core on the server machine (there is no internet on the machine) but its not getting downloaded instead its giving the below error. PFB screenshot.

dotnet tool install --global dotnet-sonarscanner

So I have downloaded .net SDK from my machine and installed the same on the server. But still I am getting an error when i execute the above command.

Hi @SonarVenkat

It looks like a downtime on nuget side, can you try again now, or browse nuget in a browser to see it it’s accessible ?