A subnet is a range of IP addresses in the virtual network. You can segment the virtual network into one or more sub-networks and allocate a portion of the virtual network's address space to each subnet. You can then deploy Azure resources in a specific subnet.
Go to the virtual network that you created.
Under
Settings
, click
Subnets
.
Click
Subnet
.
The
Add subnet
page appears.
Enter a name for the subnet.
You can use the default subnet address range or specify an address range as per requirement.
The subnet address range must be contained by the address space of the virtual network. The address range of a subnet which is in use cannot be edited.