  Heightened interest from nation states to perform content censorship make it
evermore critical to identify the impact of censorship efforts on the Internet.
We undertake a study of Internet architecture, capturing the state of Internet
topology with greater completeness than existing state-of-the-art. We describe
our methodology for this, including the tooling we create to collect and
process data from a wide range of sources. We analyse this data to find key
patterns in nation states with higher censorship, discovering a funnelling
effect wherein higher Internet censorship effort is reflected in a constraining
effect on a state's Internet routing architecture. However, there are a small
number of nation states that do not follow this trend, for which we provide an
analysis and explanation, demonstrating a relationship between geographical
factors in addition to geopolitics. In summary, our work provides a deeper
understanding of how these censorship measures impact the overall functioning
and dynamics of the Internet.
