If you are going to check the availability of a domain, today all the domain registrants (see the complate list of domain registrants) have this tool.

Example, at GoDaddy, one of the major internet registrants companies of Internet, you have a tool to check available domain to different part of the world, for example if you want to check if yourcompany.jp is registered in Japan, you can check it on GoDaddy, to register a domain name with this company really is very cheap, around $8.99 yearly, but if you are looking to register a domain name for only $5.99 you can try with 1&1 web hosting, also as we told you, in every hosting company you can check the domains, and 1&1 web hosting is not the exception.

Another company where you can find a tool to check available domains is StartLogic, you can check different extensions like .NET, .BIZ, .ORG, .INFO and .US, this company is offering to register a domain name for FREE if you contract an annual hosting plan for only $5.95 per month, yes this is really cheap, because they are giving you 300GB of space, 3000GB of transfer, and you can host 10 domains in one account, not only they are giving you an excellent plan, contracting a plan, you can promote your website in Google and Yahoo because they are giving you a coupon of $50 to use in Google Adwords and $50 to use in Yahoo Overture.