What Is a 'Domain Name'? Domain Name System, or DNS, is the friendly naming system for giving addresses to web servers and web pages. Like international phone numbers, the domain name system gives every server a memorable and easy-to-spell address. Simultaneously, the domain names hide the very technical IP (Internet Protocol) address in which most viewers aren't interested.
A domain name locates an organisation or other entity on the Internet. For example, our domain name, www.webtechplus.com.au, locates an Internet address for "webtechplus.com.au" at a host server named "www." The "com" part of the domain name reflects the purpose of the organisation or entity (in this example, "commercial") and is called the top-level domain name. The "webtechplus" part of the domain name defines the organization or entity and, together with the top-level, is called the second-level domain name. The second-level domain name can be thought of as the "readable" version of the Internet address.
Millions and millions of people all over the world browse the web every day by typing in something called a domain name into the address bar of the web browser. The browser and technology behind it then accesses the website you requested.