Purdue OWL: Credible Digital SourcesWhile there is no universal rule for whether a website’s domain extension makes it credible, it’s important to know that .com, .org, and .net domain extensions can be purchased and used by anyone. However, the .edu domain extension is reserved only for educational institutions, and the .gov domain extension is only used by governmental institutions.
Determining a website’s credibility can be especially confusing for websites with a .org extension that appear to have a governmental or educational affiliation. For example, the website passportUSA.org appears to contain official instructions for applying for a passport online; however, it is simply a PDF editing site. Because of the .org domain extension, it appears more credible.