The Internet Weather Map project maps latency on the internet on a world-wide basis, gathering data from almost every country in the world. This data is then mapped and displayed, showing latency problem areas. These problem areas show the links from one location to another, as well as which company owns, and thus responsible, for the link.
Access to customized data can be had by contributing data to the service, or by buying a monthly subscription.
For more information, please contact firstname.lastname@example.org