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You are viewing an outdated report. The latest version of this report was published on November 1st, 2018


    
DNS Site Operator
December 1st, 2002

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
ns.buydomains.com  208.254.3.177  100,768
ns2.buydomains.com  128.121.3.74  100,630
a.ns.interland.net  64.226.28.33  46,394
b.ns.interland.net  66.111.73.173  46,376
c.ns.interland.net  64.77.127.42  46,204
ns1.secure.net  192.220.124.10  32,419
ns2.secure.net  192.220.125.10  32,399
dns2.nic.it  193.205.245.8  31,132
ns1.mydomain.com  216.52.121.227  30,874
ns2.mydomain.com  216.52.121.234  30,869
ns3.mydomain.com  216.34.94.182  30,848
ns4.mydomain.com  216.52.121.235  30,837
dns3.name-services.com  63.251.83.36  30,172
dns4.name-services.com  216.89.126.2  30,172
dns5.name-services.com  63.251.83.37  30,168
dns2.name-services.com  66.216.126.143  30,166
dns1.name-services.com  66.150.5.103  30,166
dns2.earthlink.net  207.217.77.12  28,847
dns3.earthlink.net  207.217.120.13  28,840
dns1.earthlink.net  207.217.126.11  28,832

Survey Limitations
Our survey, while having an impressive 9,143,959 sites and 5,322,729 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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