CIDR Prefix: /9
Usable Host Range for /9 Subnet
Half of Class A address space used for global enterprise multi-cloud backbones. Pre-calculated routing boundaries, binary mapping mask, cloud provider allocation metrics, and copy-ready Terraform snippets.
100% Free & Secure Client-Side Sandbox
Interactive /9 Subnet Workspace
Pre-loaded Seed: 10.0.0.0/9Instantly ingest standardized industrial address space assignments from cloud reference blueprints.
Pre-Computed /9 Subnet Technical Specifications
Verified 32-bit Bitwise Calculation MatrixSubnet Mask (Dotted Decimal)255.128.0.0
Usable Host Capacity8,388,606 IPs
Cloud Reserved IPs (AWS)5 IPs
Default Range Seed10.0.0.0/9
| Binary Mask Blueprint | 11111111.10000000.00000000.00000000 |
|---|---|
| CIDR Notation | /9 |
| Netmask Address | 255.128.0.0 |
| Total Host Addresses | 8,388,608 |
| Usable Hosts (Standard IPv4) | 8,388,606 usable IPs |
| Cloud Net Capacity (AWS / GCP) | 8,388,603 usable IPs(AWS reserves 5 addresses: Network, VPC Router, DNS, Reserved, Broadcast) |
| Primary Architectural Use Case | Half of Class A address space used for global enterprise multi-cloud backbones. |
Terraform IaC Configuration Block (/9)
Copy-ready infrastructure code# Aggregated enterprise route entry for /9 block.
resource "aws_route" "supernet_9" {
route_table_id = aws_route_table.core.id
destination_cidr_block = "10.0.0.0/9"
transit_gateway_id = aws_ec2_transit_gateway.main.id
}Related CIDR Subnet Specifications
← Larger Network (Double Host Capacity)/8 Subnet (16,777,214 Usable Hosts)
Class A private network allocation (10.0.0.0/8) for massive enterprise networks.
Smaller Network (Half Host Capacity) →/10 Subnet (4,194,302 Usable Hosts)
Carrier-Grade NAT (CGNAT) / RFC 6598 shared address space.