[David John]

Registrars store domain name information on their Servers. Whenever a search engine or direct URL is made on the internet for your domain name, this server captures it. The server then in turn send it to your web host, the place where your website files are stored. Because of this if the server is down or not working, people will not be able to find your website. It is that Simple. So needless to say it is essential that the server runs pretty much all the time. Server uptime is displayed as percentages eg. 99.99%. The higher the score the better.

Payment method accepted by registrar

Domain names can be bought using PayPal, Credit or Debit Cards, Bank Transfers and other web wallets etc. List of payment methods accepted are different with different registrars. You therefore need to choose a registrar which provides the facility with which you plan to buy the domain with.

Check to see if your desired TLDs are available

Not all registrars have the same list of different top level or country level cheap domains for sale in their catalogue. The big registrars usually have more complete list of different TLDs. So which TLD you want, viz. .com,.net,.co.uk,.in,.us etc will also have a say on the choosing of the registrar.

Although not the focus of our topic I want to include a very important tip on choosing different TLDs. Anyone who wants a successful website needs to choose TLDs according to their preferred regions. That means if you plan on getting the most visitors from US, you should choose.us. It is a well known SEO fact that search engines including Google favor TLDs relative to their local search engines and also on where the web hosting server is located.