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Slight Increase in DNS Resolvers Doing Priming Queries after .arpa Signing - Why?

Emile Aben — Apr 06, 2010 01:55 PM

The roll-out of a signed root-zone at K-root on 24 March 2010 was uneventful. But we saw the number of resolvers doing priming queries increase slightly since 18 March 2010 and wanted to find out why.

Tags: statistics, root-servers, dnssec, dns » Read more


Spam over IPv6

Angel Blazquez — Mar 30, 2010 02:30 PM

With the increased deployment of IPv6, we were curious to see how much the amount of spam sent over IPv6 increases.

Tags: statistics, measurements, dns, ipv6 » Read more


Measuring IPv6 at Web Clients and Caching Resolvers (Part 2: Country Level and other Statistics)

Emile Aben — Mar 25, 2010 01:40 PM

In Part 1 of this article we showed some statistics on IPv6 at end-users and at caching DNS resolvers. In this part will dig deeper into the data we collected and show details on mobile device use of IPv6, country- and city-level IPv6 deployment numbers, and AS-level statistics.

Tags: rex, statistics, database, routing, dns, ipv6, ipv4 » Read more


Measuring IPv6 at Web Clients and Caching Resolvers (Part 3: Methodology)

Emile Aben — Mar 25, 2010 01:40 PM

In Part 1 and Part 2 of this article we showed various statistics on IPv6 measurements of web clients and caching resolvers. In this part we explain how the measurements were done.

Tags: statistics, ipv4, dns, ipv6 » Read more


Measuring IPv6 at Web Clients and Caching Resolvers (Part 1)

Emile Aben — Mar 25, 2010 01:35 PM

It is important to keep an eye on how the IPv6 Internet develops. We wrote a script to measure the IPv4 capability, IPv6 capability and IPv4/IPv6 preference of end-users visiting our site. What is unique about this script is that it allows us also to measure the caching DNS resolver that the end-user system is using.

Tags: statistics, tools, dns, ipv6 » Read more


Find Abuse Handler Details Using the Abuse Finder

Paul Palse — Mar 22, 2010 03:00 PM

The RIPE Database contains a lot of useful information about who to contact in case of network abuse or spam. But sometimes it can be difficult to find the right abuse handler information for a network resource in the RIPE Database. We developed an Abuse Finder tool that will make it easier.

Tags: security, tools, database » Read more


A Look at DNS Priming Queries to K-root

Emile Aben — Mar 12, 2010 04:30 PM

In this article we take a look at DNS priming queries arriving during the deployment of a DNSSEC signed zone at the DNS root servers. We are specifically looking for potential problems as a result of this deployment.

Tags: rex, statistics, dnssec, root-servers, dns, security » Read more


IPv4 Address Allocation Rates

Robert Kisteleki — Mar 04, 2010 02:10 AM

On 30 January 2010 the RIR system reached a small milestone: on this day APNIC has surpassed the RIPE NCC in terms of total allocated/assigned IPv4 address space, as seen in the RIR stats files. On this occasion we decided to look a bit into how IPv4 allocation/assignment rates changed over the last couple of years.

Tags: statistics, ipv4, database » Read more


Preparing for Use of 32-bit ASN in a Production Network

Sjoerd Oostdijck — Mar 02, 2010 12:10 PM

We were assigned a 32-bit Autonomous System Number from IANA to deploy a new DNS cluster with a different routing policy.

Tags: ases, policy, routing, dns » Read more


DNSSEC Key Roll-over Pitfalls

Mirjam Kühne — Feb 19, 2010 12:00 AM

A few weeks ago the RIPE NCC was alerted to a rapid increase in DNSKEY queries for its signed reverse DNS zones. We did some investigations. Read about the results in this article.

Tags: security, dnssec, dns » Read more

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