A ccTLD, or country code top-level domain, is a two-letter domain extension that represents a specific country or territory. For example, .uk is the ccTLD for the United Kingdom, while .ca is for Canada. These domains help identify websites associated with a particular nation, making it easier for users to find local content. ccTLDs are often used by businesses and organizations to establish a local presence online. They can also indicate the geographical focus of a website, which can be beneficial for search engine optimization (SEO) and targeting specific audiences.