Data.gouv.fr is France's official open platform for public data. The site includes public data generated or received in connection with a public service mission: taxes, budgets, grants, expenditure, land use, unemployment, housing renovation, air quality measures, public services addresses, delinquency and crime, tourism statistics, election results, spending for social security, effective public functions, aid from the common agricultural policy, and discharges of pollutants into the air from industrial facilities, among other topics.
This source offers a map/database with information on datacenters, cloud services providers and internet traffic exchanges across the world.
This initiative of the European Commission tracks the progress of EU member countries (plus Iceland, Norway, and Turkey) towards a series of goals related to digitization. It organizes the data around a set of areas—connectivity, human capital, use of Internet, integration of digital technology, digital public service, and research and development—and there are reports for each.
This project by Google Ideas and Arbor Networks provides a global map and daily information on DDoS attacks.
Dyn, which bought Renesys in 2014, provides through Dyn Research similar information to the one Renesys used to offer: it publishes frequent posts on internet infrastructure and geopolitics, provides a yearly review of the top 12 internet providers, produces a bulletin on network outages, and it gives access to presentations on different topics.
This site provides a list of the websites blocked in Turkey. It also categorizes the source/reason for the blockage (the courts, telecoms authority, etc), offers statistics, and commentary through a blog.