When an Internet user types a domain name into a web site browser, a request is sent out to the local Internet Service Provider (ISP) asking where it can find that website. The ISP checks with the relevant master domain name server for the country then the server points the user to the location of the web site.
Now to speed these domain name queries up, whenever the local ISP makes a query on a domain name it will store the result for a period of time so that it doesn’t have to ask again. This is a process called caching. Every now and then the ISP will update their stored cache with the information stored on the master domain name server. This period of time can range between a few minutes and 48 hours.
Whenever you want to update the information that is stored about your domain name on the master domain name server, because of caching, it can take up to 48 hours for every ISP around the world to update their records. This is a process called ‘propagation’.
Own your Domain Name
Every serious business web site needs at least one domain name. The choice of what domain name(s) you purchase is absolutely crucial. Do not use the ‘free’ domain names that are offered by some websites. These free domain names usually come in the form of www.someothername.com/your_name. It is unprofessional and less enticing for users to follow a free domain name made up of unrelated words, in a line-up of search engine results.