To describe endpoints

The following describe-endpoints example lists the endpoints in your AWS account.

aws dms describe-endpoints

Output:

{
    "Endpoints": [
        {
            "Username": "dms",
            "Status": "active",
            "EndpointArn": "arn:aws:dms:us-east-1:123456789012:endpoint:SF2WOFLWYWKVEOHID2EKLP3SJI",
            "ServerName": "ec2-52-32-48-61.us-west-2.compute.amazonaws.com",
            "EndpointType": "SOURCE",
            "KmsKeyId": "arn:aws:kms:us-east-1:123456789012:key/94d5c4e7-4e4c-44be-b58a-c8da7adf57cd",
            "DatabaseName": "test",
            "EngineName": "mysql",
            "EndpointIdentifier": "pri100",
            "Port": 8193
        },
        {
            "Username": "admin",
            "Status": "active",
            "EndpointArn": "arn:aws:dms:us-east-1:123456789012:endpoint:TJJZCIH3CJ24TJRU4VC32WEWFR",
            "ServerName": "test.example.com",
            "EndpointType": "SOURCE",
            "KmsKeyId": "arn:aws:kms:us-east-1:123456789012:key/2431021b-1cf2-a2d4-77b2-59a9e4bce323",
            "DatabaseName": "EMPL",
            "EngineName": "oracle",
            "EndpointIdentifier": "test",
            "Port": 1521
        }
    ]
}

For more information, see Working with AWS DMS Endpoints in the AWS Database Migration Service User Guide.