Insufficient Subnet IPS

Is there a way to check if there are any IP getting orphaned from the subnet and anyway to check this ?

In Azure Vnet, if any Private IPv4 which is not being used or gets released after a resource is destroyed (such as a VM or NIC), becomes available in the Vnet itself.

You can check the resources connected to Vnet in the Blade menu > VNet > Settings > Connected Devices.

Note, that Azure Subnet reserves +5 IPv4 for the internal working (per subnet). so plan the number of subnets. The more the subnet more the IPs get wasted.

Hello Jomon John

You could compare subnet usage from both QA and Dev VNet details to see if there are more IP address assigned to it, this will give you the count of the IPs assigned to QA vs Dev.

If you want to see the NIC name you can remove wc -l from the below az-cli query and see the resources attached and then compare both results to see what kind of resources QA subnet is having more than the Dev subnet.

az network vnet subnet show \  
 --resource-group <your_resource-grp_name> \  
 --vnet-name <your_VNet_name> \ 
--name <your_subnet_name> \ 
--query "ipConfigurations[].id" 
-o tsv | wc -l

Reference article: https://learn.microsoft.com/en-in/cli/azure/network/vnet/subnet?view=azure-cli-latest#az-network-vnet-subnet-show