Public Suffix Model

The Public Suffix Model is a framework used in internet domain name management. It helps categorize parts of a domain name that are publicly controlled by registrars versus those that are reserved for use by individuals and organizations. For example, in the domain "example.co.uk," "co.uk" is a public suffix because it represents a broader category managed by a registry, while "example" is a specific domain owned by a user. This model is important for security and privacy, helping web browsers and applications understand how to treat different parts of domain names effectively.