Hi Martin, On 11/07/2013 10:15, Martin Millnert wrote: > Dear friends of integers, > > http://bgp.potaroo.net/v6/v6rpt.html appeared in an discussion on an IRC > channel recently, and it occurred to me that a crucial bit of > information is not available, namely "What is the total amount of IPv4 > address space announced by ASNs which do (not) also announce IPv6?" (or > variants of).
For 1 Aug 2013 I found that about 70% of IPv4 address space is announced by ASNs which also announce IPv6 address space. Short RIPE Labs article about it: https://labs.ripe.net/Members/emileaben/ipv6-asns-size-matters regards, Emile Aben RIPE NCC PS: apologies for late reply, it's vacation time :)
