One way to get a quick idea of who is sponsoring or publishing a website is to understand the domain name portion of the URL.
Commercial businesses and for-profit organizations
Organizations directly involved in Internet operations
Miscellaneous organizations that don't fit any other category, such as non-profit groups.
United States federal government organizations
United States military organizations
Web pages created independently by individuals
A two-letter international standard abbreviation such as ".de" for Germany or ".uk" for the United Kingdom