Azure IP filter and downloader script

Grabs the JSON file for the Azure IP Ranges and Service Tags – Public Cloud.

Script allows for flitering and downloads the IPs into one big file it also makes a file just for IPv4 and IPv6

The script grabs the json file directly from Microsoft (no more manual updating needed).

How to use

mandatory parameters only: exportlocation: Save location (folder will be created if it does not exist)

Optional parameters: Region and Service filters. If not passed, defaults will be used

./Azure-IP-Downloader.ps1 -exportlocation "./IPs" -regionFilter northeurope -serviceFilter LogicApps

If the account that is running the script doesn't have read write access to the specified save location it will fail.

deployed fix to no longer need manual updating of the Microsoft URI to download the JSON file. Thanks @erikplekenpol for the fix.
deployed fix to auto create the save location if it doesn't exist.

added DLURI which makes the script grab the MS JSON URI from a TXT file so the script doesn't need to be edited manually each week when MS release a new JSON file.