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Finally, since 2011 the TLD policy is essentially unrestricted, if you pay enough money and adopt the operating procedures laid down anyone can register a sponsored TLD.
Look forward to a whole set of new TLDs like .singles, .kitchen and .construction arriving. Figure 1-1 Domain Structure and Delegation What is commonly called a Domain Name is actually a combination of a domain-name and a TLD and is written from LEFT to RIGHT with the lowest level in the hierarchy on the left and the highest level on the right.
From our brief history of Name Servers we saw how three needs emerged: The Internet Domain Name System elegantly solves all these problems at the single stroke of a pen (well actually the whole of RFC 1034 to be precise).
The Domain Name System uses a tree (or hierarchical) name structure.
Thus uk is the Domain Name of mycompany registered as a company from the UK registration authority.
# In the case of the g TLDs, such as .com, etc., the user part of the delegated name - the name the user registered - is a Second Level Domain (SLD). The user part is therefore frequently simply referred to as the SLD.
So the the Domain Name in the example above can be re-defined to consist of: The term Second Level Domain (SLD) provides technical precision but can be confusing when applied to a generic concept like a user domain - unless the precision is required we will continue to use the generic term Domain Name or simply Domain to describe the whole name, for instance, what this guide calls a Domain Name would be or uk.
Since 1998 ICANN, a non-profit organisation, has assumed this responsibility from the US government.
The g TLDs are authoritatively administered by ICANN and delegated to a series of accredited registrars.