@David Cantos​ If there are lot of IP addresses you can block subnet or did you tried below api to restrict

curl -X POST -n \

https://<databricks-instance>/api/2.0/ip-access-lists

-d '{

"label": "office",

"list_type": "ALLOW",

"ip_addresses": [

"1.1.1.1",

"2.2.2.2/21"

]

}'