Azure cli command cannot find existing subscriptions

I am trying to list all private dns zones in an Azure subscription with this az cli command:

az network private-dns zone list --subscription $subscriptionName

But for some subscriptions i get this error message:

ERROR: (BadRequest) The specified subscription <SUB_ID> does not existCode: BadRequestMessage: The specified subscription <SUB_ID> does not exist

even though I can find the subscription in the Azure portal.

It does not happen for all subscriptions i try with the command, just a handful.I can't find a correlation between the ones which work.

What can cause this error?