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IPv4 Address Span This figure shows the total amount of address space spanned by the routing table. This is a view derived from the Route-Views archive, where each AS has a single colour. The snapshots are at two-hourly intervals, and span from early 2000 until the present. The strong banding in the figure is spaced 16.7M units apart, or the size of a /8 advertisement There appear to be 3 /8 advertisements that are dynamic. Not every AS sees the same address range, and this is long term systemic, rather than temporary. This is probably due to routing policy interaction, coupled with some cases of prefix length filtering of routing information. The rate of growth declined sharply across 2002 and the first half of 2003, resuming its 2000 growth levels in 2004. |