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Rene Wilhelm

RIPE NCC Staff — 10 Jul, 2010 04:25 PM
IPv6 RIPEness in 2017 by Rene Wilhelm — last modified 13 Feb, 2017 10:27 AM

This post provides an update on our IPv6 RIPEness project, including an analysis of IPv6 RIPEness for new Local Internet Registries (LIRs).

15,000 Local Internet Registries by Rene Wilhelm — last modified 17 Apr, 2018 11:01 AM

On 28 December 2016, about 90 days before its 25th anniversary, the RIPE NCC reached the milestone of serving 15,000 active Local Internet Registries (LIRs). In this article we look at trends observed in the membership in the last few years. We also assess the remaining lifetime of the last bit of IPv4 in our available pool.

Impact of IPv4 Transfers on Routing Table Fragmentation by Rene Wilhelm — last modified 24 Nov, 2016 01:19 PM

IP address transfers have the potential to create more entries in the routing table for the same amount of address space. We analyse the net effect that four years of IPv4 transfers in the RIPE NCC service region have had on routing table growth and compare this to growth for allocations from which no transfers have been made.

Another Look at RIPE Atlas Probe Lifetimes by Rene Wilhelm — last modified 17 Oct, 2016 08:54 AM

We take another, more detailed look at probe lifetimes and the dynamics of probes connecting and disconnecting from the RIPE Atlas infrastructure to try to understand how to keep the network growing in the long term.

Developments in IPv4 Transfers by Rene Wilhelm — last modified 31 Jul, 2017 10:48 AM

In May 2015, we looked at IPv4 transfers in the RIPE NCC service region and found signs of an emerging market. Both the number and size of transfers conducted under RIPE Policy showed an upward trend in the years 2013-2014. One year later, we take another look. Did this trend continue? What have been the effects of the inter-RIR transfer policy?

RIPE NCC Membership and Available IPv4 Statistics - an Update by Rene Wilhelm — last modified 17 Oct, 2016 08:54 AM

Ahead of RIPE 72, we wanted to take another look at our membership statistics. Was membership growth affected by the Executive Board's resolution preventing multiple LIR accounts? And how will the growth in new LIRs affect the projected lifespan of the available IPv4 pool?

How Pingable are the Pingables? by Rene Wilhelm — last modified 17 Oct, 2016 08:58 AM

In February 2011 the RIPE NCC implemented the "pingable:" and "ping-hdl:" attributes in the RIPE Database. These attributes were added to the Routing Policy Specification Language by RFC 5943 to allow networks to advertise IP addresses that are reachable and can be used as a target for diagnostic tests. Five years later we check how the new attributes have been adopted and how reachable the pingable addresses registered in the RIPE Database are when pinged from RIPE Atlas.

Impact of K-root Expansion as Seen by RIPE Atlas by Rene Wilhelm — last modified 17 Oct, 2016 08:54 AM

In the course of 2015 we have expanded the K-root anycast cluster with 17 hosted servers in 15 new cities. We look at RIPE Atlas to see what impact this had on performance on both global and regional scales.