IP Addressing

IP Addressing / Most Commented

Department of Commerce Cancels IANA Contract RFP

The United States government has cancelled IANA Request for Proposal (RFP) SA1301-12-RP-IANA according to an updated page made today on the FedBizOpps website. The change -- time stamped Mar 09, 2012 2:44 pm -- states: "The Department of Commerce intends to reissue the RFP at a future date, date to be determined (TBD). Interested parties are encouraged to periodically visit www.fbo.gov for updates." more»

No Big Run on IPv4 in 2011

2011 was an interesting year for IPv4: in February 2011, the Internet Assigned Numbers Authority (IANA) handed out their last free IPv4 address blocks to the Regional Internet Registries (RIRs). In April 2011, the APNIC (the Regional Internet Registry for the Asia Pacific region) started allocating from its last /8. At the RIPE NCC we did not see a big jump in IPv4 address allocations in 2011, as anticipated by some observers. more»

Data Quality in the RIPE NCC Service Region

In an earlier article on CircleID, Registry Data Quality Assessment, we discussed the importance of high quality and accurate IP registry data. At that time, we focused mainly on the accuracy of legacy address space: IP addresses that were given out prior to the existence of the RIPE NCC and that are not part of the current registry system. In this article, we want to present the efforts to keep the address space that is the responsibility of the RIPE NCC up to date and well maintained. more»

CircleID's Top Ten Posts of 2011

Here are the top ten most popular news, blogs, and industry updates featured on CircleID in 2011 based on the overall readership of the posts for the year. Congratulations to all the participants whose posts reached top readership and best wishes to the entire community for 2012. Happy New Year! more»

DDI Integration: We Need IPAM

I am a big fan of DDI (DNS, DHCP and IPAM) as magical trio to manage all transactions on network infrastructures... Or to say the least: make it possible. Basically it makes these "Core Network Services" concise, manageable and integrated. It basically makes the network infrastructures of today and the future possible. There is however one thing that continuously seems to irritate when talking about integrating these services on networks. more»

IP Address Space Covered by Certificates

Since the RIPE NCC launched its Resource Certification service, there is a steady increase in the number of prefixes covered by certificates. The Resource Certification (RPKI) service was launched at the beginning of 2011. The system enables network operators to perform Border Gateway Protocol (BGP) origin validation, which means that they can securely verify if a BGP route announcement has been authorised by the legitimate holder of the address block. more»

DNS Measurements with RIPE Atlas Data

As described in New RIPE Atlas Features in the Making, each RIPE Atlas probe performs "anycast instance discovery" measurements. This means, for each DNS root name server, we determine which instance of a name server a probe uses. We compile the data from all probes and build maps showing these results for each Atlas probe. In other words, the map shows the "gravitational radius" for root DNS server instances. more»

IPv6 RIPEness: More Smaller and Younger Organizations Deploying IPv6

The number of RIPE NCC members [also referred to as Local Internet Registries (LIRs)] that have an IPv6 allocation continues to grow -- in absolute terms as well as in percentages. 46% of all RIPE NCC members have one or more IPv6 RIPEness stars. ... Do new members pick up IPv6? Are older members with more experience, well-established businesses and customer base dominating IPv6 RIPEness scores? And what about the size of a member? Are small and large members adopting IPv6 in equal proportions? In this article we look into answering these questions. more»

Visibility of Prefix Lengths in IPv4 and IPv6

Internet routes are specified for an address prefix. The shorter the prefix, the more general the route. A shorter prefix covers more address space and thus a bigger part of the Internet. Very long prefixes cover few addresses and are used for local routing close to the destination address. In general, it is not necessary to distribute very long prefixes to the whole Internet, because a more general, shorter prefix is sufficient to direct packets in the direction of the destination. more»

Neustar Professional Services: Additional Expertise to Improve Productivity

While it would be nice if your company had IT staff members that were experts in every technology, that is just not realistic. And today, many companies face the challenge of finding the appropriate and specialized expertise that is required to deal with ongoing issues such as network optimization, performance degradations, network risks, and more. more»

A Look at the Growth of the Internet Routing System

Geoff Huston, APNIC's Chief Scientist, is visiting the RIPE NCC this week to spend time with his fellow Regional Internet Registries (RIR) colleagues and to strengthen collaboration on shared projects. We've used this opportunity to invite him to produce the 'Interesting Graph of the Week'. Geoff has been monitoring the global routing system for many years. Here are his most recent observations. more»

Registry Data Quality Assessment

Accurate registration data is essential for the global registry system. To ensure that the RIPE Registry's data is correct, up-to-date and accurate, the RIPE NCC regularly checks the Registry data to fix inconsistencies and outdated information. We recently evaluated and analysed all IP address ranges registered in the RIPE Database and were pleased to find that 96.09% of those records are considered accurate. more»

Authentication Methods Used in the RIPE Database

Objects in the RIPE Database can only be modified by those authorised to do so. For instance, an object representing a certain range of IP addresses assigned to an organisation by the RIPE NCC or a Local Internet Registry (LIR) can be modified by the organisation holding that address space. Each database object contains one or more attributes referencing the maintainer(s) of that object. In a maintainer (MNTNER) object, credentials are listed for those who are authorised to modify any object referencing that MNTNER object. more»

Comparing IPv4 and IPv6 Performance

The active measurements the RIPE NCC carried out on World IPv6 Day on 8 June 2011 included ICMP (Internet Control Message Protocol) and ICMP6 (ICMP for IPv6) measurements from our vantage points to selected hostnames of World IPv6 Day participants and other dual-stacked parties. We used these measurements to determine the performance of IPv4 versus IPv6 connections. more»

Assigning 32-bit ASNs

With 16-bit Autonomous System Numbers (ASNs), 65,536 unique numbers are possible. Just like 32-bit IP addresses, these 16-bit ASNs are becoming a scarce resource. Therefore, in 2007 the Internet Engineering Task Force (IETF) developed a new format, 32-bit ASNs (RFC 4893), which increases the supply of ASNs to four billion. more»