The Internet's DNS system works much like a phone book by managing the mapping between names and numbers.
A domain name is a web address consisting of a website name and a domain name extension. The name is up to you – as long as it consists of letters, numbers, hyphens and is still available, whereas the domain extension is usually a set combination of a few letters.
Just like a physical address helps people find a specific place, the purpose of a domain is to help visitors find a website. Without domain names, users can only access websites using Internet Protocol (IP) addresses.
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