Hi, On Tue, Aug 20, 2013 at 04:36:10PM +0200, Jeroen Massar wrote: > > It may be some bias from some organizations or individuals in those > > regions, but at the end the decision of using /64, /60, /56 or /48 > > depends on the ISP alone. > > As prefixes are allocated based on the amount of address space one > needs, the ISP receives that allocation from RIR based on the intended > usage. As such, it is also expected that the space is actually used for > those purposes.
In RIPE land, it's the ISP's decision what size to assign to end users (/64.../48). For HD ratio utilization, the RIPE NCC will count the number of assigned /56s, with a /48 assignment being counted as "256 /56". RIPE policy doesn't answer the question about "residential BCP", though - and that seems to coalesce to "residential = /56, business = /48" when looking at the larger players. > Next to that there is a very nice IETF recommendation too... The IETF formally left the address space distribution regime when they delegated responsibility to ARIN. Gert Doering -- NetMaster -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (89) 32356-444 USt-IdNr.: DE813185279