cidrly(1) Install $ go get github.com/grezar/cidrly Usage $ aws ec2 describe-subnets --filters "Name=vpc-id,Values=vpc-xxxxxxxx" --region ap-northeast-1 | cidrly . ├── 10.0.0.0/24(subnet-a) ├── 10.0.2.0/28(subnet-b) └── 10.0.2.16/28(subnet-c)