ODATA Connect with AZURE SQL

ODATA Connect with AZURE SQL

We are getting the following error using ODATA connection. This was working till few hours ago and suddenly stopped working. Nothing changed from firewall side. SKYVIA IP Addresses are whitelisted

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - No such host is known.)