Before comparing regions of the world it is useful to look at a World Map of Internet Users. This shows that for most the developed world (US and Canada, W. Europe, Japan, Taiwan, S. Korea) typically 40% or more of the people have Internet connectivity while for S. Asia Africa according to ITU figures for 2004 it is less than 5%, i.e. typically a factor of 10 less3% and for Sub-Saharan Africa closer to 1.8% and without South Africa 2% closer to 1.3%.
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The left hand figure shows the packet loss to various regions of the world as seen from N. America. Since losses are fairly distance independent no attempt has been made to normalize the data. It is seen that the world divides up into two major super-regions: N. America, Europe, E. Asia and Oceania (mainly Australia and New Zealand) with losses below 0.1%, and Latin America, C. Asia, Russia, S.E. Asia, S. Asia and Africa with losses > 0.1% and as high as as a few per-cent. All countries are improving exponentially, but Africa is falling further behind most regions.
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The right middle graph shows the unreachability of world regions seen from the US. A host is deemed unreachable if all pings of a set fail to respond. It shows the fragility of the links link and is mainly distance independent (the reasons for fragility are usually in the last mile, the end site or host). Again the developed regions US and Canada, E. Asia, and Oceania have the lowest unreachability (< 0.3%) whil while the other regions have unreachability from 0.7% to 2%, and again Africa is not improving, with S. Asia having the second worst unreachability.
The right hand graph shows the jitter or variability of world regions seen from the US. The jitter is defined as the Inter Quartile Range (IQR) of the Inter Packet Delay Variability (IPDV i = RTT i - RTT i-1) . The Jitter is relatively distance independent, it measures congestion, and has little impact on the Web and email. It decides the length of VoIP codec buffers and impacts streaming. We see the usual division into dveloped verus developed versus developing regions.