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Rene Wilhelm

Pages created by Rene Wilhelm

A Shrinking Pie? The IPv4 Transfer Market in 2017
A Shrinking Pie? The IPv4 Transfer Market in 2017
Rene Wilhelm — 30 Jan 2018

A record number of IPv4 addresses were transferred between LIRs in the RIPE NCC service region in 2017. However, 16 of the largest transfers, amounting to 78% of the total transferred address space, were really about the administrative management of resources between related business units. In terms of buyers and sellers, this part of the IPv4 transfer market decreased in size last year. … Read more

Measuring your Web Server Reachability with TCP Ping
Measuring your Web Server Reachability with TCP Ping
Rene Wilhelm — 27 Sep 2017

HTTP measurements from RIPE Atlas probes are only possible towards RIPE Atlas anchors. However, when it comes to measuring the connectivity and latency of web servers on the network level, an alternative exists, which we call TCP Ping: a traceroute with special options that mimic the TCP handshake that takes place when an HTTP connection is established. In this article we compare the results of large scale HTTP and TCP Ping measurements. … Read more