Use DescribeVpcAttribute with an Amazon SDK or CLI

To describe the enableDnsSupport attribute

This example describes the enableDnsSupport attribute. This attribute indicates whether DNS resolution is enabled for the VPC. If this attribute is true, the Amazon DNS server resolves DNS hostnames for your instances to their corresponding IP addresses; otherwise, it does not.

Command:

aws ec2 describe-vpc-attribute --vpc-id vpc-a01106c2 --attribute enableDnsSupport

Output:

{
    "VpcId": "vpc-a01106c2",
    "EnableDnsSupport": {
        "Value": true
    }
}

To describe the enableDnsHostnames attribute

This example describes the enableDnsHostnames attribute. This attribute indicates whether the instances launched in the VPC get DNS hostnames. If this attribute is true, instances in the VPC get DNS hostnames; otherwise, they do not.

Command:

aws ec2 describe-vpc-attribute --vpc-id vpc-a01106c2 --attribute enableDnsHostnames

Output:

{
    "VpcId": "vpc-a01106c2",
    "EnableDnsHostnames": {
        "Value": true
    }
}

Example 1: This example describes the 'enableDnsSupport' attribute.

Get-EC2VpcAttribute -VpcId vpc-12345678 -Attribute enableDnsSupport

Output:

EnableDnsSupport
----------------
True

Example 2: This example describes the 'enableDnsHostnames' attribute.

Get-EC2VpcAttribute -VpcId vpc-12345678 -Attribute enableDnsHostnames

Output:

EnableDnsHostnames
------------------
True