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Christian Teuschel

Based in Amsterdam

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About the author

Christian Teuschel joined the RIPE NCC in 2010 and is currently a System Architect in the Research and Development department. He is responsible for the development and operation of RIPEstat, a widely used, web-based interface that provides data on Internet address space and related information for countries and hostnames. He also contributes to RIPE Atlas and other services provided by the RIPE NCC. Christian is co-author of the RIPE Document "Sources of Abuse Contact Information for Abuse Handlers" (ripe-658). Expertise: RIPEstat, Internet measurements, Internet Abuse, RIPE Labs, Data Quality

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From REX to RIPEstat: a Look at the Past and the Challenges Ahead

RIPEstat will soon turn 10 years old, which I take as an opportunity to reflect on how RIPEstat came about, explain our new challenges and how we are tackling them.

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Historical Whois

The Historical Whois widget is a new RIPEstat widget that allows users to visually navigate through RIPE Database objects and their historical versions. It comes equipped with a set of handy features for comparing historical changes to objects in a diff-tool like fashion.

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BGP Meets Cat

As controversial as the title sounds much attention was drawn last weekend to RIPEstat when Job Snijders (@JobSnijders) revealed his creation of a Nyan Cat painted by smartly managing the visibility of 175 /24 prefixes.

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Sand in the Gears

Last Thursday, 1 June, RIPEstat suffered from the longest service outage in years. Although the root cause was, in hindsight, trivial, it took more than three hours to fully recover. As unfortunate as this outage was, the situation yielded vital take-aways that will hopefully help prevent future ou…

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Finding Abuse Contact Information with RIPEstat

No one wants to have to deal with a suspected abuse case, but at least RIPEstat can help you to find available anti-abuse contact information in the RIPE Database easily. In this article we show you when and how you can use RIPEstat to do that.

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Country Specific Graphs in RIPEstat

In response to numerous requests made by our members and the wider community for more country-specific statistics, we developed additional functionality in RIPEstat that shows various datasets by country. A new widget called Country Routing Statistics is now available, along with the ability to com…

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Join Us for the Next RIPEstat Demo (s2e04) - Live

The next RIPEstat demo will be presented live at RIPE 64 in Ljubljana. After the demonstration there will be time to discuss RIPEstat development with other interested people. If you're not able to attend the demo, there are other opportunities to meet the people behind RIPEstat, and to watch a r…

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RIPEstat Demo - s2e03

The third RIPEstat demo for 2012 covered all the new and modified widgets we've added in the last month: ASN Neighbours, Geolocation History, Prefix Count, Prefix Size Distribution, Routing History, and Announced Prefixes. Other new features included enabling the RIPE NCC Access login system, and l…

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RIPEstat: New Geolocation History Widget

RIPEstat has a new widget: Geolocation History. Geolocation History provides information about the physical location of address space over time. This article describes the features of the widget, and explains how the results can be interpreted.

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One Year of RIPEstat

In December 2010, RIPEstat, the RIPE NCC's "one-stop shop" for Internet-related information, was released in its first beta version. With the start of a new year - marking RIPEstat's first year in action - it is a good time to briefly recap 2011.

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