Alternately, a request from the same page to “http://www.googleanalytics. com/ga.js,” which has the domain “google-analytics.com,” is recognized as a third-party request. The same technique for HTTP requests is also applied toward evaluating the presence of third-party cookies. The method is not flawless, as a given site may actually use many domains, or a subdomain may point to an outside party. However, when evaluating these types of requests in aggregate, such problems constitute the statistical noise that is present in any large dataset.