Two Stage Filtering for IPv6 Electronic Mail

I'm a guest at the MAAWG conference in San Francisco this week and several people have now mentioned to me the problem and the opportunity of anti-spam e-mail filtering for IPv6. Tomorrow is World IPv6 Day but since a bunch of the pieces have clicked together in my head I'll post this a day early. more

How Many IPv4 Addresses Does the RIPE NCC Have Left?

Since IANA ran out of IPv4 addresses, people are increasingly aware of how short the remaining lifetime of IPv4 is. With World IPv6 Day taking place this week, the issue has come into even sharper focus. Since March 2011, the RIPE NCC has been publishing the size of its pool of available IPv4 addresses. All five Regional Internet Registries (RIRs) regularly publish the status of their IPv4 address pools. In the image below, you can see how the number of IPv4 addresses in the RIPE NCC pool changes over time. more

India: One Country, Many Internationalized Domain Names

If you're interested in learning more about Internationalized Domain Names (IDNs), UNESCO and EURid recently released a report on the evolution and challenges of IDNs. It's a good read and it highlights some of the struggles that countries and registries face and taking IDNs mainstream. Though Russia has so far proven to be a major success story - with more than 800,000 IDN registrations so far (and counting) - most other IDNs are have a long ways to go yet. more

“Is DSL Finally Dying?” No!

Jeff Heynan at Infonetics reported a double-digit drop in DSL equipment sales, inspiring Dan O'Shea at Telephony to headline "Is DSL Finally Dying?" Both note that DSL sales in Q1 were actually ahead of the same quarter last year. Yet Dan writes "Fiber is the future." more

Who Cares About 50,000 .CAT’s?

This past May 19th, 5 years after its sunrise, puntCAT arrived at the 50,000 domain names landmark. We know that, nowadays, 50,000 domain names may hardly be described as shocking news, and, certainly, this is not our limit, and we believe there's still plenty of room for .cat to grow. Then, who and why should care about this number? more

DHCP for IPv4 vs. IPv6 - What You Need to Know

Dynamic Host Configuration Protocol (DHCP) is a protocol intended to enable machines (servers, game consols, etc) wishing to be "online" the ability to request Internet Protocol information from a DHCP server automatically. ... In this article we will begin to outline some of the fundamental differences between DHCPv4 and DHCPv6, explore historical uses of DHCPv4 and how those concepts will adapt/change in IPv6. more

New gTLDs: Will Application Developers Be Ready In Time to Secure User Confidence?

Last week I pointed out a potential problem with the user experience, if, as envisioned, a large number of new generic Top-Level Domains (gTLDs) are added to the root at the same time. The problem I was referring to has nothing to do with the new gTLDs themselves. Rather, it's about the lack of any updated procedures and communication campaigns to application and software vendors. The objective would be to alert them in time and equip them to swiftly update their programs... more

ICANN Releases gTLD Applicant Guidebook

Per their timeline, ICANN released the gTLD Applicant Guidebook on May 30th. This version contains revisions based upon both community feedback, as well as recent consultations with the Governmental Advisory Committee (GAC). more

What is Internet Protocol Address Management?”

The number of web-based devices is expanding at an exponential clip, virtualization is making a very static environment dynamic, and now with the exhaustion of IPv4 and the oncoming complexities of IPv6 network operators must reevaluate what IP Address Management (IPAM) really is. The goal of this post is to define the various functions that make up IP Address Management. more

Anycast, Unicast, or Both?

A long time ago in an Internet far away, nobody paid for DNS services. Not directly at least. We either ran our own servers, or got DNS service as part of our IP transit contract, or traded services with others. In ~1990 I was the operator of one of the largest name servers in existence (UUCP-GW-1.PA.DEC.COM) and I exchanged free DNS secondary service with UUNET. Two thousand zones seemed like a lot of zones back then -- little did we dream that there would some day be a billion or so DNS zones world wide. more