A tracking domain is the "long domain" owned and controlled by you, for which we will report all click traffic from all Bitly users. This is only available to our Enterprise customers, even if you have a branded short domain set up. All click traffic on your tracking domain, including clicks on links that were created by other Bitly users, will appear in your dashboard. For example, the tracking domain for The New York Times is "nytimes.com", and the tracking domain for Tech Crunch is "techcrunch.com".
Keep in mind that a tracking domain cannot be the same as your custom short domain
You must have FTP access to your tracking domain. Some sites, for example wordpress.com, allow you to purchase a domain but they do not give FTP access to users. In order to set up your tracking domains, please send a list of domains to email@example.com including your account name and bitly username.