Public Suffix List

Submit amendments to the Public Suffix List

In order to make the Public Suffix List as current and accurate as possible, we request that TLD registries put in place processes to keep their section of the list current and accurate. This will make sure that all sites within their TLD continue to function fully within modern browsers, in terms of the site owners' ability to set cookies and so on.

In addition, owners of privately-registered domains who themselves issue subdomains to mutually-untrusting parties may wish to be added to the PRIVATE section of the list.

The procedure to make changes is as follows:

  1. Carefully read about the list format to see how the list rules are defined.
  2. View the list, find your top-level domain (if present), and then check the rules already there for accuracy.
  3. If there are any additions, removals or amendments to be made, the best thing to do is to create a pull request for our Github repo. These days, you can pretty much do that using Github's GUI without even having to install Git. If that's not possible, then file an issue on Github, ideally with a unified diff attached.

Requests for changes to the PRIVATE section must come from the domain owner. Requests for changes to the ICANN section either need to come from the registry, or come with links to supporting official documentation.