• 4 min read
In the resource certification system you specify your routing policy via Route Origin Authorization (ROA) objects. One of the options you can set is the ‘Maximum Length’, which specifies the maximum length of an IP address prefix that the AS is authorised to advertise. In this article we will analy…
• 3 min read
We have just released the RIPE NCC Resource Certification Web Validator. It will allow you to validate a Route Origin Authorisation (ROA) file against the RIPE NCC Trust Anchor through a web form, either online or locally.
• 5 min read
Since we started providing the certification service on 1 January 2011, many LIRs made use of the service. In this article you can see some graphs showing the number of certificates in place today, as well as certified address space.
Based in Amsterdam, NL
I'm a data scientist at the RIPE NCC. I'm a chemist by training, but have been working since 1998 on Internet related things, as a sysadmin, security consultant, web developer and researcher. I am interested in technology changes (like IPv6 deployment), Internet measurement, data analysis, data visualisation, sustainability and security. … More
• 7 min read
Amidst the recent political unrest in the Middle East, researchers have observed significant changes in Internet traffic and connectivity. In this article we tap into a previously unused source of data: unsolicited Internet traffic arriving from Libya. The traffic data we captured shows distinct c…
Based in Amsterdam, NL
I'm a data scientist at the RIPE NCC. I'm a chemist by training, but have been working since 1998 on Internet related things, as a sysadmin, security consultant, web developer and researcher. I am interested in technology changes (like IPv6 deployment), Internet measurement, data analysis, data visualisation, sustainability and security. … More
• 8 min read
In a previous article we measured that a large percentage of 6to4 connections fail. In this article we show our attempts to find out why these connections fail.
Based in Amsterdam
I studied History in France. Computing science has always been a hobby. I joined the RIPE NCC in 2002 as a hostmaster and never left the boat. I am now a Senior Internet Resource Analyst, Part-time trainer, and part of the RIPE meeting team. More
• 6 min read
In order to ensure accurate and up to date registration data, the RIPE NCC started the Registry Data Quality project in 2009. The article below describes this activity and the problems we found and how we fixed them.
Based in Nice, FR
Michael Behringer works at Cisco, specializing in core security, network complexity and network simplification. More
• 5 min read
This article, prompted by a panel discussion at the RIPE 61 Meeting, describes the most significant implications of network complexity and suggests ways to deal with it. This is a topic that requires more work and a lot of input from network operators. We hope you’ll work with us to advance this su…
• 9 min read
We partnered with several Regional Internet Registries (RIRs), including the RIPE NCC, to examine what traffic is going to unallocated IP address ranges. In this particular case, we looked at traffic going to 5/8 and 37/8.
Based in Rome, Italy
PhD student at Roma Tre University. More
• 5 min read
Roma Tre University presents three analyses related to the recent events in Egypt, proving interesting behavior in relation to the observed disconnection. We use tools like BGPlay and iBGPlay, developed for the visualisation of BGP dynamics.
Based in Amsterdam, NL
• 6 min read
What happens to BGP traffic when an announcement or withdrawal of an address prefix propagates through the Internet? See below some interesting graphs and observations.
