Actuallly, there is no broad organization called Anarchist International. A mention can refer to:

International Workers' Association (1922-); Wiki article

International of Anarchist Federations (1968-); Wiki article

International Union of Anarchists (2011-2013); Wiki article.

Still there exists split group of International of Anarchist Federations that calls itself 'Anarchist International (AI-IAF-IFA) with website and no Wikipedia article.
This domain name was established under The World Government 'Rectification of Names' program and can be delegated to AI when it really appears - internet(at)