CIDR Prefix: /30
Usable Host Range for /30 Subnet
Point-to-point router links and private interconnect virtual interfaces. Pre-calculated routing boundaries, binary mapping mask, cloud provider allocation metrics, and copy-ready Terraform snippets.
100% Free & Secure Client-Side Sandbox
Interactive /30 Subnet Workspace
Pre-loaded Seed: 192.168.1.0/30Instantly ingest standardized industrial address space assignments from cloud reference blueprints.
Pre-Computed /30 Subnet Technical Specifications
Verified 32-bit Bitwise Calculation MatrixSubnet Mask (Dotted Decimal)255.255.255.252
Usable Host Capacity2 IPs
Cloud Reserved IPs (AWS)4 IPs
Default Range Seed192.168.1.0/30
| Binary Mask Blueprint | 11111111.11111111.11111111.11111100 |
|---|---|
| CIDR Notation | /30 |
| Netmask Address | 255.255.255.252 |
| Total Host Addresses | 4 |
| Usable Hosts (Standard IPv4) | 2 usable IPs |
| Cloud Net Capacity (AWS / GCP) | 0 usable IPs(AWS reserves 5 addresses: Network, VPC Router, DNS, Reserved, Broadcast) |
| Primary Architectural Use Case | Point-to-point router links and private interconnect virtual interfaces. |
Terraform IaC Configuration Block (/30)
Copy-ready infrastructure code# Note: AWS VPC subnets require a minimum size of /28.
# /30 subnets represent point-to-point interconnects & Transit Gateway routes.
resource "aws_ec2_transit_gateway_route" "p2p_30" {
destination_cidr_block = "192.168.1.0/30"
transit_gateway_route_table_id = aws_ec2_transit_gateway_route_table.main.id
transit_gateway_attachment_id = aws_ec2_transit_gateway_connect_peer.peer.id
}Related CIDR Subnet Specifications
← Larger Network (Double Host Capacity)/29 Subnet (6 Usable Hosts)
Micro-subnet for small firewall clusters, hardware appliances, or transit nodes.
Smaller Network (Half Host Capacity) →/31 Subnet (2 Usable Hosts)
RFC 3021 point-to-point links using zero broadcast addresses for router links.