Understanding a Domain Name
A domain name normally consists of two parts - your company name and the organisation type/region. For example, Acme Toys is the company name therefore the domain name is acmetoys.com.au -.
The .com.au indicates Acme Toys Pty Ltd is a commercial organisation in Australia.
.com.au    Commercial organisations in Australia
.net.au    Network infrastructure and Internet Service Provider in Australia
.gov.au    Australian government and semi-government departments in Australia
.org.au    for organisations, clubs and various forms of affiliated groups in Australia
.edu.au    Australian educational institutions in Australia
.asn.au    Australian Associations  in Australia
.com    Commercial organisations in the United States
.net    Network infrastructure and Internet Service Providers in the United States
.gov    US government and semi-government departments
.edu    educational institutions in the United States

Country Codes
Below is a short list of countries and their respective two letter abbreviations. For a full list please refer to: http://www.webcentral.com.au/workshop/countries.htm

Country Domains
Antarctica    aq
Australia    au
Canada    ca
China    cn
France    fr
Germany    de
Hong Kong    hk
India    in
Israel    il
Italy    it
Japan    jp
Malaysia    my
New Zealand    nz
Singapore    sg
Taiwan    tw
Thailand    th
United Kingdom    uk

Exceptions To The Rule
Usually you can tell where a company is located by looking at their domain name. Normally .com, .net and .org would be indicative of a company or organisation located in the United States, but because there are less restrictions for the .com domain, a company located in another part of the world can register a domain which ends with .com, .net or .org. WebCentral can register your name in the .com domain, however, a surcharge applies. This surcharge is necessary because there are millions of registered domains and it's often difficult to find a domain name that hasn't already been taken.