Subnets are the foundational building blocks used to deploy cloud resources in your public cloud
VPC. They are bound to a single zone and cannot span multiple zones or regions, which helps with
security, reduces latency, and improves availability. Create multiple VPCs and subnets easily by using
the suggested prefix ranges and preconfigured network security policies or design and define your
own address prefixes and custom security policies. CIDR blocks 161.26/16 and 166.8/14 are both
reserved and routed into every subnet. Read about our service endpoints available for IBM Cloud
VPC. The default quota limit for the number of subnets that can be created within a VPC is 15.
