Featured Blogs

Geo and Brand TLDs Only for a 2019 Second Round of New gTLDs?

Let's be clear: right now, any statements on when (or even if) a follow-up round of new gTLD applications might happen are pure conjecture. The first round closed on April 12, 2012. Since then, the pressure has been increasing for ICANN to actually live up to the guidebook premise of launching "subsequent gTLD application rounds as quickly as possible" with "the next application round to begin within one year of the close of the application submission period for the initial round." But that deadline is clearly not going to be met. more

Brand Top-Level Domain and Brand Value

Brands are an asset and have a value for organizations, as they generate revenue: Customers are happy to pay a premium for a brand they love. They will show a preference and be loyal to a brand they trust. There are various ways to estimate the value of a brand. An excellent point of reference is Interbrand, which for many years has followed the top 100 brands and publishes their value based on a combination of three factors. more

Google Launches Corporate Blog ‘The Keyword’ on .Google Domain

As momentum builds in the world of .brands, there are some major players we as an industry have been watching closely for an indication of how their branded TLDs will become part of their digital strategies. .brand websites like these from high-profile tech leaders and influencers can be the best publicity for brand TLDs as a whole; as their involvement and buy-in acts as a significant endorsement of the .brand movement. more

Splitting the Root: It’s Too Late

One of the consistent chants we've always heard from ICANN is that there has to be a single DNS root, so everyone sees the same set of names on the net, a sentiment with which I agree. Unfortunately, I discovered at this week's ICANN meeting that due to ICANN's inaction, it's already too late. Among the topics that ICANN has been grinding away at is Internationalized Domain Names (IDNs) that contain characters outside the traditional English ASCII character set... ICANN has tied itself with the issue of homographs, different characters that look the same or mean the same thing. Once people noticed that IDNs let you register different names that look the same, the intellectual property crowd that has always had a mysteriously great influence on ICANN went into a tizzy and they went into lengthy discussions on what to do about them... more

Comments on an IP Address Trading Market

With IPv4 addresses becoming scarcer, there has been talk that a trading market will develop. The idea is that those holding addresses they do not really need will sell them for a profit. More alarming is that there have been a few articles about how the Regional Internet Registries (RIR) are contemplating creating such a market so that they can regulate it, conceding that it will happen anyway and taking the "if you can't be 'em, join 'em" attitude. This is all a bit disturbing. Maybe I'm naïve, but it's a little unclear to me how an unsanctioned trading market could really operate without the RIRs at least being aware... more

Pakistan Hijacks YouTube: A Closer Look

A few hours ago, Pakistan Telecom (AS 17557) began advertising a small part of YouTube's assigned network. This story is almost as old as BGP. Old hands will recognize this as, fundamentally, the same problem as the infamous AS 7007 from 1997, a more recent ConEd mistake of early 2006 and even TTNet's Christmas Eve gift 2005. Just before 18:48 UTC, Pakistan Telecom, in response to government order to block access to YouTube, started advertising a route for 208.65.153.0/24 to its provider... more

Technical Comments on Mandated DNS Filtering Requirements of H. R. 3261 (“SOPA”)

About two months ago, I got together with some fellow DNS engineers and sent a letter to the U. S. Senate explaining once again why the mandated DNS filtering requirements of S. 968 ("PIPA") were technically unworkable. This letter was an updated reminder of the issues we had previously covered... In the time since then, the U. S. House of Representatives has issued their companion bill, H. R. 3261 ("SOPA") and all indications are that they will begin "markup" on this bill some time next week. more

Hypertext Mail Protocol (a.k.a. Stub Email): A Proposal

Back in the days of dial-up modems and transfer speeds measured in hundreds of bits per second, unwanted email messages were actually felt as a significant dent in our personal pocketbooks. As increases in transfer speeds outpaced increases in spam traffic, the hundreds of unwanted emails we received per week became more of a nuisance than a serious financial threat. Today sophisticated spam filters offered by all major email providers keep us from seeing hundreds of unwanted emails on a daily basis, and relatively infrequently allow unwanted messages to reach our coveted Inboxes. So, to some degree, the spam problem has been mitigated. But this "mitigation" requires multiple layers of protection and enormous amounts of continually-applied effort. more

A Question of DNS Protocols

One of the most prominent denial of service attacks in recent months was one that occurred in March 2013 between Cloudflare and Spamhaus... How did the attackers generate such massive volumes of attack traffic? The answer lies in the Domain Name System (DNS). The attackers asked about domain names, and the DNS system answered. Something we all do all of the time of the Internet. So how can a conventional activity of translating a domain name into an IP address be turned into a massive attack? more

DNS Firewalls In Action - RPZ vs. Spam

In general, a network firewall is just a traffic filter... Filtering rules can be anything from "allow my web server to hear and answer web requests but not other kinds of requests" to "let my users Ping the outside world but do not let outsiders Ping anything on my network." The Internet industry has used firewalls since the mid-1980's and there are now many kinds, from packet layer firewalls to web firewalls to e-mail firewalls. Recently the DNS industry has explored the firewall idea and the results have been quite compelling. In this article I'm going to demonstrate a DNS firewall built using RPZ (Response Policy Zones) and show its potential impact on e-mail "spam". more

December 2016 Dot Brand Insights

The dot brand observatory is a research program on brands who registered their name at the top level of the internet domain name system -- the DNS. The research looks at the registration of second level domain names by brands, but also the use of these domain names to provide services and experience to customers. This research is carried out every other month, and we illustrate hereafter a certain number of highlights of our December analysis. more

Apple.news or News.apple?

In a development that few people will notice but is interesting to us domain geeks, Apple is in the process of retiring its news.apple.com domain in favor of apple.news. Apple is not going to shed light on why it is making this migration. I suspect that anything to take traffic off the .com domain is never a bad idea. Perhaps Apple has a long-term vision for making its News app web-accessible (instead of locked within an app). more

IP or NAT IP: Mostly IP

There seems to be a heated debate on this site about NAT (network-address translation). What came as a surprise to me is that a lot of the arguments seem to reside in ideological point of views which obscure the real issues at hand -- IP addressing, IP security -- and have little to do with NAT's actual merits or drawbacks. more

Permissionless Innovation: Why It Matters

We live in a world of information abundance and the proliferation of ideas. Through mobile devices, tablets, laptops and computers we can access and create any sort of data in a ubiquitous way. But, it was not always like that. Before the Internet information was limited and was travelling slow. Our ancestors depended on channels of information that were often subjected to various policy and regulatory restrictions. The Internet changed all that. more

Defending Networks Against DNS Rebinding Attacks

DNS rebinding attacks are real and can be carried out in the real world. They can penetrate through browsers, Java, Flash, Adobe and can have serious implications for Web 2.0-type applications that pack more code and action onto the client. Such an attack can convert browsers into open network proxies and get around firewalls to access internal documents and services. It requires less than $100 to temporarily hijack 100,000 IP addresses for sending spam and defrauding pay-per-click advertisers. Everyone is at risk and relying on network firewalls is simply not enough. In a paper released by Stanford Security Lab, "Protecting Browsers from DNS Rebinding Attacks," authors Collin Jackson, Adam Barth, Andrew Bortz, Weidong Shao, and Dan Boneh provide ample detail about the nature of this attack as well as strong defenses that can be put in place in order to help protect modern browsers. more