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Emile Aben

RIPE NCC Staff — 10 Jul, 2010 04:23 PM
512K-mageddon? by Emile Aben — last modified 17 Oct, 2016 09:00 AM

A week after the 512K-routes problem started making waves, we took a look at the global effects to see what impact it had. Spoiler: Not much.

IPv6 ASNs - Network Size Matters by Emile Aben — last modified 17 Oct, 2016 09:00 AM

This article provides statistics about how much IPv4 address space is being announced by networks (ASNs) that are also announcing IPv6 address space. Currently this is about 70% of IPv4 address space.

Measuring More Internet with RIPE Atlas by Emile Aben — last modified 17 Oct, 2016 09:00 AM

RIPE Atlas collects a lot of measurements. But how much of the Internet are we actually measuring? We had a sense that with a limited amount of extra load on the system, we could dramatically increase the number of router IPs seen on a given day in RIPE Atlas - and that means measuring more of the Internet.

REX and Ukrtelecom by Emile Aben — last modified 17 Oct, 2016 09:00 AM

This articles reports from an analysis where we used REX to find out more information about the IP addresses used by Ukrtelecom after they were identified as a spam source.

RIPE Atlas - A Case Study of IPv6 /48 Filtering by Emile Aben — last modified 17 Oct, 2016 08:59 AM

In this article I look at four different IPv6 destinations in different BGP set-ups and how these are seen by RIPE Atlas probes. This reveals some differences in reachability for the different networks, likely due to BGP route filtering. We see roughly 1% out of ~500 RIPE Atlas probes that can't reach a destination in an IPv6 /48 prefix (without a covering shorter prefix) out of IPv6 PA space, likely due to filtering.

IPv6 RIPEness - More Stars by Emile Aben — last modified 17 Oct, 2016 08:59 AM

IPv6 RIPEness helped in creating awareness and got people into action with regards to their first steps towards deploying IPv6 in the RIPE NCC service region. Up until now IPv6 RIPEness didn't measure actual IPv6 deployment. In this article we propose a measure (a "5th star"), which attempts to measure actual IPv6 deployment at the edge.

RIPE Atlas - A Case Study of AAAA Filtering by Emile Aben — last modified 17 Oct, 2016 08:59 AM

At the recent RIPE Meeting, the question was raised whether Internet users would see significant filtering of AAAA DNS queries or replies. We used RIPE Atlas measurements to provide an answer to this question.

Looking at France-IX with RIPE Atlas and RIS by Emile Aben — last modified 17 Oct, 2016 08:58 AM

This article describes our recent collaborations with France-IX on collecting data plane and control plane Internet data with RIPE Atlas and the RIPE NCC's Routing Information Service (RIS).

The Internet in North Korea - Hanging by a Single Thread? by Emile Aben — last modified 15 Mar, 2019 12:32 PM

North Korea is one of the most secluded countries in the world, but it is nonetheless connected to the Internet. We investigate North Korea's Internet connectivity in light of recent outages and discuss the fragile nature of its setup.

How RIPE Atlas Helped Wikipedia Users by Emile Aben — last modified 17 Oct, 2016 08:58 AM

Engineers from the Wikimedia Foundation and the RIPE NCC recently collaborated on a project to measure the latency of Wikimedia sites for users worldwide. Together, we identified ways to decrease latency and improve performance for users around the world.

A RIPE Atlas View of Internet Meddling in Turkey by Emile Aben — last modified 17 Oct, 2016 08:58 AM

In RIPE Atlas we see latencies to Google's 8.8.8.8 DNS resolver service drop in Turkey. We expect this is due to hijacking of the 8.8.8.8 service. Our measurements show a timeline of these events. Note that even when the Twitter ban had been lifted, RIPE Atlas still saw fake 8.8.8.8 DNS service active in Turkey. In the evening of 7 April the situation returned to normal.

RIPE Atlas - the iPad Drawing by Emile Aben — last modified 17 Oct, 2016 08:57 AM

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.

Networks With IPv6 Over Time - A Short Update by Emile Aben — last modified 17 Oct, 2016 08:55 AM

We regularly check the status of IPv6 deployment in the RIPE NCC service region, but also in other regions. One way to measure IPv6 deployment is to look at the percentage of networks (Autonomous Systems) announcing IPv6 prefixes and to follow the developments over time.

Has the Routability of Longer-than-/24 Prefixes Changed? by Emile Aben — last modified 17 Oct, 2016 08:55 AM

In October 2014 we started announcing a few longer-than-/24 prefixes and determined they were not very visible according to the Routing Information Service (RIS) and RIPE Atlas measurements. Now, almost a year later, we revisit this.

#facebookdown? What Internet Measurement Data Shows by Emile Aben — last modified 17 Oct, 2016 08:55 AM

While at this point it is still unclear what exactly happened at Facebook this morning (27 January), we collect data on the Internet control plane (BGP) and data plane that allows us to provide some insight into what happened with Facebook's connectivity to the rest of the Internet.

IPv6 RIPEness - The List of 4-star LIRs by Emile Aben — last modified 17 Oct, 2016 08:55 AM

Following up from the IPv6 RIPEness graphs we published earlier, those Local Internet Registries (LIRs) that fulfill all 4 IPv6 RIPEness criteria are now listed on the RIPE NCC web site.

IPv6 RIPEness - Implementing the Fifth Star by Emile Aben — last modified 17 Oct, 2016 08:54 AM

In this article we present the first publicly available beta version of the fifth IPv6 RIPEness star. This measures real IPv6 deployment from LIRs in the RIPE NCC service region. The methodology is what we think to be the best compromise yet between simple and fair. In this first version, 573 LIRs (>9%) qualify for the fifth star.

A Tale of BGP Collectors and Customer Cones by Emile Aben — last modified 17 Oct, 2016 08:54 AM

When operators and researchers use data from BGP route collectors such as RIS and Route Views, it's not easy to tell if a path announced to a collector is an ISP's customer cone, an internal route, or one learned from peering or transit. In this post we look at what information we can currently get from BGP communities in RIS.

Time Warner Cable Outage by Emile Aben — last modified 17 Oct, 2016 08:54 AM

The Time Warner Cable network suffered an outage on 27 August 2014 between approximately 9:40 and 10:55 UTC. We looked at some interesting details of this outage using RIS and RIPE Atlas.

Measuring Countries and IXPs in the SEE Region by Emile Aben — last modified 17 Oct, 2016 08:54 AM

We looked at Internet measurements for the South East Europe (SEE) region in order to share these with attendees at the SEE 4 Meeting that took place from 21-22 April 2015 in Belgrade, Serbia. This is the long version of the lightning talk Vesna Manojlovic gave at SEE 4.

Distribution of RIPE Atlas Probes by Emile Aben — last modified 17 Oct, 2016 08:53 AM

As the RIPE Atlas network continues to grow, it's useful for ambassadors and potential probes hosts to easily see where we already have probes deployed and where we'd like more probes installed. We created a few useful maps to help with this.