Is Munchkin API down?

I am trying to track a viewed page with this below. No info is updated on marketo activity log

jQuery.ajax({

      url: '//munchkin.marketo.net/munchkin.js',

      dataType: 'script',

      cache: true,

      success: function() {

          ops = new Array();

          ops['gn']=true;

        Munchkin.init('xxxx', {"cookieAnon":false});

        //Munchkin.createTrackingCookie();

        Munchkin.munchkinFunction('visitWebPage', {url: '/r/optin/air', param: ops});

      }

});