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You are viewing an outdated report. The latest version of this report was published on December 1st, 2022


    
DNS Site Operator
January 1st, 2010

This report details the names and locations of all DNS servers on the internet, as well as the number of domains that are serviced by these servers. In this fashion, we can discover

  • the number of sites hosted by ISPs
  • the number of sites hosted by hosting companies that use an ISP's facilities, but run their own name servers
  • the number of sites hosted by specialty DNS service providers
  • the organizations that choose to operate their own DNS servers rather than to use those of their ISP/hosting provider.

The survey works by determining each month the authoritative name server for each host (and more accurately, each domain) in our survey. We then count the number of domains hosted on each DNS server.

Search
Curious about the size of a the domain set handled by a particular ISP's name servers? Try searching for the ISP's name server. For example, to find Exodus' name servers, try
exodus.

    

Top 20 by Host Name
The top 20 name servers ranked according to the number of domains handled by each name server, with a name server uniquely identified by its fully qualifed name, are shown below.

Name Server Name   Name Server IP   Domains
dns1.name-services.com  98.124.192.1  329,301
dns2.name-services.com  98.124.197.1  329,297
dns3.name-services.com  98.124.193.1  329,228
dns4.name-services.com  69.64.145.225  329,016
dns5.name-services.com  98.124.196.1  327,739
ns1.dreamhost.com  66.33.206.206  253,027
ns2.dreamhost.com  208.96.10.221  252,959
ns3.dreamhost.com  66.33.216.216  252,860
dns2.technorail.com  62.149.132.2  207,208
dns.technorail.com  62.149.128.2  207,207
ns1.bluehost.com  74.220.195.31  165,718
ns2.bluehost.com  69.89.16.4  165,708
ns51.domaincontrol.com  216.69.185.26  165,228
ns52.domaincontrol.com  208.109.255.26  164,473
ns.xinnetdns.com  121.14.70.6  149,826
ns.xinnet.cn  121.14.70.4  149,771
ns58.1and1.com  74.208.3.8  137,706
ns57.1and1.com  74.208.2.9  137,705
ns1.dns.ne.jp  210.188.224.9  130,603
ns2.dns.ne.jp  210.224.172.13  130,468

Survey Limitations
Our survey, while having an impressive 49,181,047 sites and 23,190,236 domains in the data set, does not include all web sites and domains. We only include those that we consider active, which, by our definition, means we found the site via a link from somewhere else. Sites not linked by anyone are by definition not included in the survey.

We also actively drop sites out of the survey that fail to respond 3 consecutive months to our HTTP queries. So, while a DNS server might still respond with information for a domain, if there is no active web site that we can reach for the domain in question, then the domain is not included in this survey at all, even if it still has other functioning services (such as email).



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