Use DescribeInternetGateways with an Amazon SDK or CLI

To describe an internet gateway

The following describe-internet-gateways example describes the specified internet gateway.

aws ec2 describe-internet-gateways \
    --internet-gateway-ids igw-0d0fb496b3EXAMPLE

Output:

{
    "InternetGateways": [
        {
            "Attachments": [
                {
                    "State": "available",
                    "VpcId": "vpc-0a60eb65b4EXAMPLE"
                }
            ],
            "InternetGatewayId": "igw-0d0fb496b3EXAMPLE",
            "OwnerId": "123456789012",
            "Tags": [
                {
                    "Key": "Name",
                    "Value": "my-igw"
                }
            ]
        }
    ]
}

For more information, see Internet gateways in the Amazon VPC User Guide.

Example 1: This example describes the specified Internet gateway.

Get-EC2InternetGateway -InternetGatewayId igw-1a2b3c4d

Output:

Attachments       InternetGatewayId     Tags
-----------       -----------------     ----
{vpc-1a2b3c4d}    igw-1a2b3c4d          {}

Example 2: This example describes all your Internet gateways.

Get-EC2InternetGateway

Output:

Attachments       InternetGatewayId     Tags
-----------       -----------------     ----
{vpc-1a2b3c4d}    igw-1a2b3c4d          {}
{}                igw-2a3b4c5d          {}