Former Software Engineer at the RIPE NCC More
• 1 min read
We have been using the prototype RIPEstat toolbox to analyse what happened to the Internet in Egypt.
Based in Amsterdam, The Netherlands
I wrote the articles collected here during my time as community builder of the RIPE NCC and the maintainer and editor of RIPE Labs. I have since taken on a new role serving as the Chair of the RIPE Community. You can reach my new profile via the website link … More
• 5 min read
This article summarises the first RIPEstat demo session that took place today, 25th January 2011. At the end of the article are the dates of the next demos, and options for providing feedback.
Based in Western Europe, NL&DE mostly
>>>>>>>>>>>> https://www.ripe.net/about-us/press-centre/publications/speakers/daniel-karrenberg <<<<<<<<<<<< Ample information about his past sins can be found using your favourite search engine. Following are a few additional keywords you might use, arranged by decade: 1980s: GUUG EUUG EUnet unido mcvax cwi RARE iepg RIPE; 1990s: RIPE+NCC rir iana postel terena ebone centr k.root-servers.net; 2000s: dnsmon … More
• 3 min read
The RIPE NCC is working on a toolbox, called RIPEstat, that will make it easier to access the various datasets maintained by the RIPE NCC. This toolbox will be developed in close cooperation with the community. There will be public demo sessions as described in this article.
Based in Amsterdam, The Netherlands
I wrote the articles collected here during my time as community builder of the RIPE NCC and the maintainer and editor of RIPE Labs. I have since taken on a new role serving as the Chair of the RIPE Community. You can reach my new profile via the website link … More
• 2 min read
When joining the monthly public RIPEstat demo sessions, please note the following points of etiquette. This will make communication via webex easier for all participants.
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
• 4 min read
This article is about the lottery of an iPad for people hosting RIPE Atlas probes. As an extra motivator for people to keep their probes up as much as possible, the lottery drawing is weighted based on probe-uptime.
• 7 min read
A while ago we announced the new Global Resource Service (GRS) for the RIPE Database. It allows you to query other Regional Internet Registry (RIR) databases and Routing Registry data using the RIPE Database interface. In this article we describe this service some more and show some examples.
• 4 min read
For 20 years, the RIPE NCC counted the number of hosts in its service region. The Internet has grown dramatically since then and there are various ways to measure that growth. The article below describes the history of the Hostcount, the challenges we faced over the years and the reasons why we int…
• 22 min read
Comparing ASN rankings by spam volume from two different data sources, CBL and PSBL (with a side trip to the University of Texas Computer Science Department), indicates there is enough correlation to have confidence in the rankings.
Rene Wilhelm is a senior research engineer in the R&D department at the RIPE NCC. Coming from a background in particle physics, Rene joined the RIPE NCC in 1996. His interests are in data analysis, routing, Internet measurements and visualisation. More
• 5 min read
Last month we published a graph that shows how complete the RIPE Routing Registry really is. How many of the organisations that receive an Autonomous System Number (ASN) from the RIPE NCC use the RIPE Routing Registry to register their route objects. The results were encouraging. But do these route…
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
• 6 min read
At the recent RIPE 61 meeting in Rome and at earlier meetings, we heard that connectivity over 6to4 is not very dependable, which hampers IPv6 deployment. I wondered how bad it really is and started measuring it. This article describes what I measured and shows the results. Spoiler: It's pretty bad.
