Network Operations

Taking a Closer Look at the Last /8

Marco Schmidt

• 10 Mar 2016

• 4 min read

We’ve updated our IPv4 graph to tell the whole story about our remaining address pool.

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10,000 LIRs with IPv6 Resources

Nathalie Trenaman

• 29 Feb 2016

• 6 min read

This week, the RIPE NCC saw a milestone as the 10,000th Local Internet Registry (LIR) received IPv6 addresses. The first block of IPv6 addresses was allocated from IANA to the RIPE NCC in 1999, so we have been distributing IPv6 addresses for 17 years. In those years we have seen interesting poli…

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On the Internet, Everyone is Connected to Everyone Else. Right?

Geoff Huston

• 22 Feb 2016

• 10 min read

We tend to make a number of assumptions about the Internet, and sometimes these assumptions don’t always stand up to critical analysis. We were perhaps ‘trained’ by the claims of the telephone service to believe that these communications networks supported a model of universal connectivity. Any tel…

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A Tale of Using Public DNS Servers in Iran — Part 3

Babak Farrokhi

• 16 Feb 2016

• 8 min read

Following my research on DNS reachability and performance, I found interesting results for specific domain names.

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RIPE NCC Members and Multiple LIR Accounts

Laura Cobley

• 11 Feb 2016

• 7 min read

The RIPE NCC membership has raised concerns regarding members setting up additional Local Internet Registry (LIR) accounts. The RIPE NCC Executive Board is now asking the RIPE NCC membership to discuss this. The article below provides some background information, data and statistics for the discuss…

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A Tale of Using Public DNS Servers in Iran — Part 2

Babak Farrokhi

• 8 Feb 2016

• 8 min read

This is the second part in a series of articles looking at the use of DNS servers in Iran. For the second part I will continue measuring performance and reachability for two more sets of DNS resolvers: TIC and Verisign.

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A Tale of Using Public DNS Servers in Iran — Part 1

Babak Farrokhi

• 5 Feb 2016

• 4 min read

While most Internet users are not aware of the importance of DNS resolution in their overall web browsing experience, they often complain about shortage of bandwidth when experiencing sluggish Internet connectivity. It is no surprise that most of the service providers also ignore this fact by re…

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DNS at FOSDEM 2016

Shane Kerr

• 3 Feb 2016

• 9 min read

I was at FOSDEM 2016 last weekend, and wrote up a few of my observations around DNS there. Enjoy!

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Evaluating IPv4 and IPv6 Packet Fragmentation

Geoff Huston

• 29 Jan 2016

• 24 min read

One of the more difficult design exercises in packet-switched network architectures is that of the design of packet fragmentation. In this article, I’d like to examine IP packet fragmentation in detail and look at the design choices made by IP version 4, and then compare that with the design choice…