Have you checked out the maps in your IP Networks Research Service subscription?
International Internet Routes by Region details internet bandwidth connected across international borders in Africa, Asia, Europe, Latin America, the Middle East, Oceania, and the U.S. & Canada.
International Internet Routes is an interactive map that allows you to hover on a country to see its routes. Click on any country for more details.
Log into your account at TeleGeography.com to try out these resources.