Email Directory UK

What do you call the end of the domain of an email eg .co.uk, .com? Is there a directory-style site for this?

Public Comments

1. co.uk is for the uk and .com is usa.
2. It is known as a top-level domain or TLD. For more info see http://en.wikipedia.org/wiki/Top-level_domain
3. you can have any prefix you want at the end of your website. As such ther eisn't a conclusive directory for this. Companies buy and hold certain website names and their domains in a hope that a relevant company will be interested and pay them to release the name/domain. You don't even have to have a domain...eg you could just have http://www.mywebsite
4. It's called a domain extension describes the ending of a domain name, these can also be referred to as the tld (top level domain), suffix, or domain root.
5. They're called TLDs (Top Level Domains) as they are not hosted as subdomains - eg subdomain.domain.com
6. The end of a domain name is called the extension and refers to the conuntry of origin i.e. uk (United Kingdom) fr (france) etc. It is interesting to note that the usa dose not have this extension where as every other country do. The othe part of the extension refers to what kind of site it is e.g. co is a company com is a commercial organisation org. is an organisation e.g. a charity for instance edu. is an educational establishment gov. is government etc.
7. Edward R's response is completely wrong in every detail. As other posters have explained, the last element is called the Top Level Domain, and the list of TLDs is closely controlled by IANA, the Internet Assigned Numbers Authority. They have a list on their site.