This repo tracks the changes made to the official Azure IP Address Range list available on https://www.microsoft.com. This list is published by Microsoft once a week and includes Compute, SQL and Storage ranges used in the Microsoft Azure Datacenters.
As Azure is only keeping the current state it becomes hard to track changes over time. Comparing a saved state with a current state can be done using the publication time, as long as you have a previous file saved.
This repo is updated once a day if updates had been published. This allows to track all changes over time for comparison.