Domains are as follows:
What is a cookie?
Cookies are text files containing small amounts of information which are downloaded to your device when you visit a site. Cookies are then sent back to the originating site on each subsequent visit, or to another site that recognises that cookie. Cookies are useful because they allow a site to recognise a user’s device
Cookies do lots of different jobs, like letting you navigate between pages efficiently remembering your preferences, and generally improve your web site experience. They can also help to ensure that adverts you see online are more relevant to you and your interests.
Cookies may be set by the site you are visiting (‘first party cookies’) or they may be set by other sites who run content on the page you are viewing (‘third party cookies’).