Hello @Laurent Pellegrino ,
We currently do not have a Geofeed URL in Azure to map IP ranges to the location. I have created an internal feedback item for this request.
Currently the links shared by @Takahito Iwasa are correct way to get the Geo Location IP Ranges. The Microsoft IP Range GeoLocation
file is updated every month and Azure IP Ranges and Service Tags – Public Cloud
is updated every week.
Hope this help! Please let me know if you have any additional questions. Thank you!