The Netherlands Antilles dissolved on October 10, 2010.
Curacao and Sint Maarten (the Dutch two-fifths of the island of Saint Martin) became autonomous territories of the Kingdom of the Netherlands. Bonaire, Saba, and Sint Eustatius now fall under the direct administration of the Netherlands.
As for (autonomous) Aruba, it is one of the four constituent countries that form the Kingdom of the Netherlands, together with the Netherlands, Curacao, and Sint Maarten where citizens share a single nationality.
The name 'Netherlands Antilles' is still sometimes used today to indicate the Caribbean islands which are part of the Kingdom of the Netherlands.