CIDR Prefix: /28

Usable Host Range for /28 Subnet

AWS VPC minimum allowable subnet size providing 14 usable IP addresses (9 in AWS). Pre-calculated routing boundaries, binary mapping mask, cloud provider allocation metrics, and copy-ready Terraform snippets.

100% Free & Secure Client-Side Sandbox

Interactive /28 Subnet Workspace

Pre-loaded Seed: 192.168.1.0/28

Instantly ingest standardized industrial address space assignments from cloud reference blueprints.

Pre-Computed /28 Subnet Technical Specifications

Verified 32-bit Bitwise Calculation Matrix
Subnet Mask (Dotted Decimal)255.255.255.240
Usable Host Capacity14 IPs
Cloud Reserved IPs (AWS)5 IPs
Default Range Seed192.168.1.0/28
Binary Mask Blueprint11111111.11111111.11111111.11110000
CIDR Notation/28
Netmask Address255.255.255.240
Total Host Addresses16
Usable Hosts (Standard IPv4)14 usable IPs
Cloud Net Capacity (AWS / GCP)11 usable IPs(AWS reserves 5 addresses: Network, VPC Router, DNS, Reserved, Broadcast)
Primary Architectural Use CaseAWS VPC minimum allowable subnet size providing 14 usable IP addresses (9 in AWS).

Terraform IaC Configuration Block (/28)

Copy-ready infrastructure code
resource "aws_subnet" "subnet_28" {
  vpc_id            = aws_vpc.main.id
  cidr_block        = "192.168.1.0/28"
  availability_zone = "us-east-1a"
  tags = {
    Name = "aws-min-subnet-28"
  }
}

Related CIDR Subnet Specifications

← Larger Network (Double Host Capacity)/27 Subnet (30 Usable Hosts)

Small tier subnet common for load balancer target groups and NAT gateways.

Smaller Network (Half Host Capacity) →/29 Subnet (6 Usable Hosts)

Micro-subnet for small firewall clusters, hardware appliances, or transit nodes.

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