The data set for 2002-05 to 2010-05 can be downloaded here. This data set is compiled from BGP dumps from routeviews and RIPE. It is formatted as a Python pickle file of a networkx graph. Each node and edge has a start date and an end date (end dates can include those that were seen through the last month of data collection). The nodes also have a set of the (City, Country) pairs for all of the cities their IPs are found in, according to the MaxMind IP location database. Please look in the analysis scripts for examples of python code that uses the data set.