Measurements and Statistics

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RIPE Atlas: RIPE NCC Analyses

RIPE Atlas: RIPE NCC Analyses

Mirjam Kühne

8 min read

RIPE NCC developers and researchers present their own findings about a range of topics using RIPE Atlas data, from the effect of hurricanes on the Internet to examining IPv6 /48 filtering.

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K-root Reachability in the Middle East and Central Asia

K-root Reachability in the Middle East and Central Asia

Babak Farrokhi

6 min read

There are about 600 DNS root server instances deployed around the world. But does everyone have an equal level of access to a root server in their region? Are they fairly distributed? Do all major (and country level) network operators recognise the value in deploying (or peering with) a root server…

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Reducing the BGP Table Size - A Fairy Tale

Reducing the BGP Table Size - A Fairy Tale

George Michaelson

11 min read

The issue of the relative sizes of the IPv4 and IPv6 Internet in BGP came up during discussion at the APNIC/APRICOT meeting held in Auckland, New Zealand earlier this year.

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RIPE Atlas Interface Hackathon Results

RIPE Atlas Interface Hackathon Results

Vesna Manojlovic

6 min read

The third RIPE Atlas hackathon took place in Copenhagen the weekend before RIPE 72. In this article, we share the details about the hackathon and a preview of the fourth hackathon.

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Anycast vs. DDoS - Evaluating the November 2015 Root DNS Event

Anycast vs. DDoS - Evaluating the November 2015 Root DNS Event

Giovane Moura

3 min read

IP anycast has been widely used to replicate services in multiple locations as a way to deliver better performance and resilience. It has been largely employed by CDNs and DNS operators, such as on the root server system. However, there is little evaluation of anycast under stress.

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A Visual Impression of Probe Lifetimes

A Visual Impression of Probe Lifetimes

Philip Homburg

3 min read

For a while now, the number of active RIPE Atlas probes has hovered around the 9,400 mark. This means that new probes are being connected at a fast enough rate to replace failing probes, but not enough to grow the network. At the same time, the version 3 probes have problems with their USB sticks. …

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New RIPE Atlas APIs

New RIPE Atlas APIs

Suzanne Taylor

3 min read

We've updated the RIPE Atlas APIs - and there's a comprehensive new manual to explain how to use them. As a result, the current (version 1) APIs are still available for now, but will be deprecated by the end of the year.

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There is Gold in this Stream - Sifting Through Used RIPE Atlas Traceroute Results

There is Gold in this Stream - Sifting Through Used RIPE Atlas Traceroute Results

Daniel Karrenberg

15 min read

This work demonstrates the value of the results collected by RIPE Atlas independent of the original purpose for collecting them. Using all traceroute results from a particular day as an example, we first show that near real-time analysis of the result stream is feasible. Then we show that this has …

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Pinpointing Delay and Forwarding Anomalies Using RIPE Atlas Built-in Measurements - Or How I Learned to Stop Worrying and Love the Built-Ins

Pinpointing Delay and Forwarding Anomalies Using RIPE Atlas Built-in Measurements - Or How I Learned to Stop Worrying and Love the Built-Ins

Romain Fontugne

8 min read

Detecting network disruptions is a recurring problem. Clearly locating performance degradation is an important step in debugging and subsequently fixing connectivity issues.

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Using RIPE Atlas to Debug Network Connectivity Problems

Using RIPE Atlas to Debug Network Connectivity Problems

Stéphane Bortzmeyer

15 min read

This article explains how I use RIPE Atlas probes, the official API and custom scripts to debug network issues.

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