@Zakrzewska, Agata - Thanks for the question and using MS Q&A platform.
Starting on May 30th 2024, Azure Databricks will begin using new control plane service components. This affects the egress and ingress IP addresses that the Azure Databricks control plane uses. If you use a firewall or proxy appliance to restrict user access to Azure Databricks or for controlling outbound access to your resources, you must update your access rules to include the new IP addresses. For the new IP addresses, see Azure Databricks control plane addresses.
Here is the summary of the email:
Microsoft Azure sent an email to inform that the public IP address range for the Azure Databricks control plane will be updated on 30 May 2024.
If you use a firewall or proxy appliance, you may need to update your access rules to include the new IP addresses by 30 May 2024.
If you don't use a firewall or proxy appliance, you won't be affected by this change and don't need to take any action.
For more information, see Azure Databricks is updating the public IP range for its control plane services.
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