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A Virtual Private Cloud (VPC) is a logically isolated network on IBM Cloud where you deploy your compute, storage, and database resources. VPC networking gives you full control over IP addressing, subnets, routing, and security.
A VPC provides:
Every VPC exists within a single IBM Cloud region.
When creating a VPC, you define address prefixes (CIDR blocks) for each zone:
| Zone | Address Prefix | Usable IPs |
|---|---|---|
| us-south-1 | 10.240.0.0/18 | ~16,000 |
| us-south-2 | 10.240.64.0/18 | ~16,000 |
| us-south-3 | 10.240.128.0/18 | ~16,000 |
A subnet is a range of IP addresses within a zone:
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