On 23-mei-2007, at 11:47, Wilfried Woeber, UniVie/ACOnet wrote:
http://www.ripe.net/ripe/meetings/ripe-54/presentations/ RIPE_NCC_Statistics.pdf
The bottom line is that the # of PI assignments has (considerably) surpassed the number of PA assignments since 2003, and that the load on the routing table for PI is thus bigger than for PA, although the *percentage* of PI space as compared to PA is approx. 2%.
(As a percentage of the address space, not a percentage of the number of blocks.)
Or, the other way 'round, we use more than 50% of (additional) routing table slots for some 2% of address space (PI) and less than 50% for some 98% of PA.
And that's with IPv4, where you have to show you really need a block of 256 addresses to qualify for a PI block. In IPv6, that hurdle has been removed so it has the potential to see even larger numbers of PI as soon as IPv6 deployment starts taking off.