Hi @bk ,
Sorry for the delay in my response. After having discussion with internal teams, it is suggested to whitelist all Azure Gov IP Range for Data factory Service tag. You can download JSON file that contain the current list of service tags together with IP address range details.
Please Note that: These lists are updated and published weekly
Here is the download link: Azure IP Ranges and Service Tags – US Government Cloud
Additional info: Discover service tags by using downloadable JSON files
Hope this helps. Please let us know, if you have further query.
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