The capital of Belgium has its own top level domain: .brussels. The city of Brussels is very international, housing the European Parliament and many other international organisations. That is the reason that the English name "Brussels" was chosen above the local names "Brussel" and "Bruxelles".
The .brussels domain aims at any company, organisation or individual located in Brussels, that wants to associate itself with the capital, to strengthen its online identity and as a result be preferred in location-specific results of search engine rankings.
The registry for the .brussels extension is DNS Belgium. DNS Belgium has wide experience in management of a TLD, as it operates the Belgian ccTLD .be. DNS Belgium is also responsible for the management of the .vlaanderen extension.