Vnet basics

subnet and making changes to address

You can't change the address range if there are resources already deployed to the subnet. If you want to make a change to a subnet's address range, you first must delete all the objects in that subnet.

vnet private ip address ranges

10.0.0.0-10.255.255.255 (10.0.0.0/8) 172.16.0.0-172.31.255.255 (172.16.0.0/12) 192.168.0.0- 192.168.255.255 (192.168.0.0/16)

ip addres for azure provided dns

168.63.129.16/32 (Azure-provided DNS)

subnet name

-must be unique in the vnet and you cannot change the name once it has been created -You are required to define one subnet when creating a VNet using the Azure portal.

private ip reserved

Azure reserves 5 IP addresses within each subnet. x.x.x.0-x.x.x.3 x.x.x.255: Network broadcast address

vnet and region

Each VNet is tied to a single Azure region and can only be used by resources (such as Virtual Machines) in the same region.