Hello, There is no basis for any LIR membership fee to be based on the IPv4 allocated address space and there are several reasons for this: - RIPE has never charged LIRs for IP addresses - It is true that at the beginning RIPE membership fee was based on categories, as far as I remember: SMALL, MEDIUM, LARGE and EXTRA LARGE, but it was because of work required to serve IPv4 resources. At that time IPv4 allocation and assignement policies had to be developed, every allocation of IPv4 address space to a LIR had to be checked and done by RIPE. What is more, if the IPv4 assignement made by a LIR to its End User exceeded the LIR Window size such assignement had to be checked and approved by the RIPE staff. RevDNS for allocated resources had to be made. This work is long gone. - The amount of work required to serve leftover IPv4 space cannot be compared to what it was required before - As far as I know RIPE does not pay IANA for IPv4 space allocated to Europe Region and any attempt of RIPE to require such payment from LIRs should be considered major abuse of RIPE mandate as a RIR. In conclusion, RIPE has always charged its members for Services not an address space. If a reverse model is to be developed it has to be with IANA cooperation. But in my opinion it could lead to splitting Internet to many privately administered parts. Kind regards, Jerzy Pawlus ACK Cyfronet AGH