AdeOS interactive tools

EKS Multi-AZ Subnet Splitter

Generate the standard one-subnet-per-AZ layout for an EKS-ready VPC.

EKS Multi-AZ Subnet Splitter

VPC → AZ Subnets
AZ-1
10.0.0.0/18
16,382 usable
AZ-2
10.0.64.0/18
16,382 usable
AZ-3
10.0.128.0/18
16,382 usable

Divide a VPC CIDR into equal subnets, one per availability zone.

Inputs

A VPC CIDR and the number of availability zones to split across.

Outputs

One subnet CIDR per AZ, with usable host counts.

Example

Split a 10.0.0.0/16 VPC across 3 availability zones for EKS node groups.

Important note

Results support planning and learning; verify production changes against your platform and change controls.

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