Skip to content

More information about cookies, including how to block them on all sites or delete them, can be found at AboutCookies.org.

Cookie Name Description Duration
__utma Used to distinguish users and sessions. The cookie is created when the javascript library executes and no existing __utma cookies exists. The cookie is updated every time data is sent to Google Analytics. 2 years
__utmb Used to determine new sessions/visits. The cookie is created when the javascript library executes and no existing __utmb cookies exists. The cookie is updated every time data is sent to Google Analytics. 30 mins
__utmc Not used in ga.js. Set for interoperability with urchin.js. Historically, this cookie operated in conjunction with the__utmb cookie to determine whether the user was in a new session/visit. session
__utmz Stores the traffic source or campaign that explains how the user reached your site. The cookie is created when the javascript library executes and is updated every time data is sent to Google Analytics. 6 months
ARRAffinity Azure Web Services session
PHPSESSID To identify your unique session on the website session
SESS To ensure that you are recognised when you move from page to page within the site and that any information you have entered is remembered. session
wordpress_ WordPress cookie for a logged in user session
wordpress_logged_in_ WordPress cookie for a logged in user. session
wordpress_test_ WordPress cookie for a logged in user. session
wordpress_test_cookie Tests whether or not the browser has cookies enabled session