An Atlas of Cyberspaces- ISP Backbone Maps
   An atlas of maps and graphic representations of the geographies of the new electronic territories of the Internet, WWW and other emerging Cyberspaces.
   http://www.cybergeography.org/atlas/isp_maps.html

Global Internet Exchange
   PacketExchange is a global internet exchange providing secure, high speed networking and ethernet services globally with six different product options.
   http://www.packetexchange.net

Internet Backbone Maps
   
   http://www.nthelp.com/maps.htm

Packet Clearing House
   PCH has maintained a canonical list of Internet exchange points since 1994, for the use of the network operations and research communities.
   http://www.pch.net/resources/data/exchange-points/

The Netlantis Project
   Netlantis runs several route collectors all over the world, mainly next to internet exchanges. It provides tools which are valuable for planning and deployment of an international IP backbone.
   http://www.netlantis.org/