Currently I have been accessing the Service Tag API (https://docs.microsoft.com/en-us/rest/api/virtualnetwork/servicetags/list) using my current azure subscription and a exposed API.

I have been using the location 'australiaeast' in the API and in the past I would get a list of service tags, specifically a tag with id AzureCloud.australiaeast. However in the last day accessing the api with that location returns back a empty list of values.

Access the API with another location such as centralwestus returns back none empty list of values but not every tag. But some other locations it returns back a empty list such as westus.

Furthermore using the location australiasoutheast returns back a list of tags, one of them being AzureCloud.australiaeast.

So I am little confused by why some locations are returning back no values and some return back values and why it changed in the last day. Maybe it is a misunderstanding on what location does and how that relates to the azure subscription?

Some help would be much appreciated.