Getting the list id for a specific list

I am trying to get a list id for a specific list but it just goes to the failed method

Here is my code:

var SFW = window.SFW || {};
var NBSInboxResponse = SFW.NBSInboxResponse || {};
NBSInboxResponse.getListID = function () {
    'use strict';

var siteURl=url;
        var clientContext = new SP.ClientContext(siteUrl);
    var oWebsite = clientContext.get_web();
    NBSInboxResponse.collList = oWebsite.get_lists().getByTitle('Feedback Items');

    clientContext.load(NBSInboxResponse.collList, 'Include(Title, Id)');


    clientContext.executeQueryAsync(NBSInboxResponse.getListSuccess, NBSInboxResponse.getListIDFailure);
};

NBSInboxResponse.getListIDSuccess = function () {
    'use strict';
    var listID = NBSInboxResponse.collList.get_id();
    alert(listID);

   };

NBSInboxResponse.getListIDFailure = function () {
    'use strict';

    alert('Request failed. ');

    };

jQuery(document).ready(function () {
    'use strict';

    SP.SOD.executeFunc('sp.js', 'SP.ClientContext', NBSInboxResponse.getListID);


});