What does DE mean on a web address?

This might depend on WHERE the 'de' is placed within the address :

- If it comes at the right-hand-side end of the domain-name part of the site's address, like in

www.Germany-tourism.de /subdirectory /subfolder/page.HTML

the domain-part of the address being only www.Germany-tourism.de ,

then 'de' stands as an abbreviate for DEUTSCHLAND , which means Germany in German language. That means the web site is part of the generic, top-level 'DE' internet domain, managed by German counterparts ( DENIC) within internet administrative bodies.

In this case 'de' for Deutschland - Germany is similar to 'UK' for England - United Kingdom, or 'br' for Brazil.

- If 'de' is located in another segment of the web site's address, then I have no answer. Sorry.