I am guessing that service returns the XML file as a directory listing; the file called winbridge.html does exist in that directory (and contains a JavaScript code to redirect to a different URL). (Another comment said they shortened the URL to remove PII (which I am guessing was in the fragment part of the original URL; the JavaScript code makes a new URL from randomly selecting a domain name (even though the list has only one) and appending the fragment part as the path), so I suppose the file name was removed and then this directory listing is the result.)