Use ListMfaDevices with a CLI

To list all MFA devices for a specified user

This example returns details about the MFA device assigned to the IAM user Bob.

aws iam list-mfa-devices \
    --user-name Bob

Output:

{
    "MFADevices": [
        {
            "UserName": "Bob",
            "SerialNumber": "arn:aws:iam::123456789012:mfa/Bob",
            "EnableDate": "2019-10-28T20:37:09+00:00"
        },
        {
            "UserName": "Bob",
            "SerialNumber": "GAKT12345678",
            "EnableDate": "2023-02-18T21:44:42+00:00"
        },
        {
            "UserName": "Bob",
            "SerialNumber": "arn:aws:iam::123456789012:u2f/user/Bob/fidosecuritykey1-7XNL7NFNLZ123456789EXAMPLE",
            "EnableDate": "2023-09-19T02:25:35+00:00"
        },
        {
            "UserName": "Bob",
            "SerialNumber": "arn:aws:iam::123456789012:u2f/user/Bob/fidosecuritykey2-VDRQTDBBN5123456789EXAMPLE",
            "EnableDate": "2023-09-19T01:49:18+00:00"
        }
    ]
}

For more information, see Using multi-factor authentication (MFA) in AWS in the AWS IAM User Guide.

Example 1: This example returns details about the MFA device assigned to the IAM user David. In this example you can tell that it is a virtual device because the SerialNumber is an ARN instead of a physical device's actual serial number.

Get-IAMMFADevice -UserName David

Output:

EnableDate                  SerialNumber                           UserName
----------                  ------------                           --------
4/8/2015 9:41:10 AM         arn:aws:iam::123456789012:mfa/David    David