Domain Names have a variety of basic rules:

• .COM - to be used for commercial and personal sites
• .ORG - recommended for non-profit organisations
• .NET - recommended for companies involved in Internet infrastructure
• Use only letter, numbers or dash ("-")
• Cannot begin or end with a dash
• Must have at least 3 characters, but less than 63*, not including .COM, .NET and .ORG

* .com, .net and .org domain names exceeding a total of 26 characters are supported by most web browsers. However, certain web browser, e-mail programs and other Internet related applications may not support domain names over 26 characters.

• .CO.UK - UK TLD used for both commercial and personal sites
• .ORG.UK - UK TLD used for both commercial and personal sites
• Use only letter, numbers or dash ("-")
• Cannot begin or end with a dash
• Must have at least 3 characters, but less than 23, not including .CO.UK and .ORG.UK