Like most websites, our servers automatically record the page requests made when you visit our sites. These "server logs" typically include your web request, Internet Protocol address, browser type, browser language, the date and time of your request and one or more cookies that may uniquely identify your browser.
Here is an example of a typical log entry for where the search is for "cars" looks like this, followed by a breakdown of its parts:
123.45.67.89 - 25/Mar/2003 10:15:32 -
cars - Google Search - Firefox 1.0.7; Windows NT 5.1 - 740674ce2123e969
123.45.67.89 is the Internet Protocol address assigned to the user by the user’s ISP. D; depending on the user’s service, a different address may be assigned to the user by their service provider each time they connect to the Internet.;
25/Mar/2003 10:15:32 is the date and time of the query.;
cars - Google Search is the requested URL, including the search query.;
Firefox 1.0.7; Windows NT 5.1 is the browser and operating system being used.;
740674ce2123a969 is the unique cookie ID that was assigned to this particular computer the first time it visited a Google site. (Cookies can be deleted by users. If the user has deleted the cookie from the computer since the last time they’ve/s/he visited Google, then it will be the unique cookie ID assigned to their device the user the next time theys/he visits Google from that particular computer).