Unable to Download list of available providers.

[JuliusPIV]

On fresh installs of Windows 11 we're attempting to install NuGet in PowerShell v5 using the following command line:
Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Scope AllUsers -Force -ForceBootstrap -Confirm:$false -Verbose:$true -ErrorAction Stop

The process fails with errors including "Inable to download from URI 'https://go.microsoft.com/fwlink/?LinkID=627338&clcid=0x409'" and "Unable to download the list of available providers. Check your internet connection."

If I then try to run Find-PackageProvider i also fails with the same error and terminates with "The specified PackageManagement provider 'NuGet' is not available."

The error text says it’s unable to download from URI https://go.microsoft.com/fwlink/?LinkID=627338&clcid=0x409 and when we go there in Edge, we’re redirected to https://onegetcdn.azureedge.net/providers/providers.masterList.feed.swidtag but the page doesn’t load, displaying a 'took too long to response' error.

Packet captures confirm we’re seeing a SYN but there’s no ACK resulting in an “incomplete conversation”. We’ve ruled out as much as we can on the endpoint itself and our networking teams confirmed they’ve verified there isn’t anything on our corporate network (corporate Ethernet, corporate Wi-Fi, corporate guest, corporate firewall etc.) that’s getting in the way of these requests.

Is it possible that our block of IP's has been blacklisted somehow?
Is OneGet still functional, supported?
Since AnyPackage is the recommended replacement, what's the upgrade path? (read: What is the appropriate process for removing PackageManagement/OneGet and replacing it with AnyPackage?)