Is It Possible To See The Primary CIDR From The Terminal For VPC In AWS?

 

A VPC command can be used to view Primary CIDR which goes as follows:

 

aws ec2 describe-vpcs --vpc-id vpc-1a2b3c4d

Your outputs might be similar to this:

 

{

    "Vpcs": [

        {

            "VpcId": "vpc-1a2b3c4d", 

            "InstanceTenancy": "default", 

            "Tags": [

                {

                    "Value": "MyVPC", 

                    "Key": "Name"

                }

            ], 

            "CidrBlockAssociations": [

                {

                    "AssociationId": "vpc-cidr-assoc-3781aa5e", 

                    "CidrBlock": "10.0.0.0/16", 

                    "CidrBlockState": {

                        "State": "associated"

                    }

                }, 

                {

                    "AssociationId": "vpc-cidr-assoc-0280ab6b", 

                    "CidrBlock": "10.2.0.0/16", 

                    "CidrBlockState": {

                        "State": "associated"

                    }

                }

            ], 

            "State": "available", 

            "DhcpOptionsId": "dopt-e0fe0e88", 

            "CidrBlock": "10.0.0.0/16", 

            "IsDefault": false

        }

    ]

}