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You are viewing an outdated report. The latest version of this report was published on October 1st, 2020


    
DNS Site Operator
June 1st, 2003

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  102,839
ns2.buydomains.com  128.121.3.74  102,372
dns2.name-services.com  66.216.126.143  54,936
dns1.name-services.com  63.251.163.102  54,928
dns3.name-services.com  63.251.83.36  54,902
dns4.name-services.com  64.74.96.225  54,888
dns5.name-services.com  212.118.244.163  54,847
a.ns.interland.net  64.226.28.33  50,403
b.ns.interland.net  69.0.145.33  50,382
c.ns.interland.net  64.77.127.42  50,301
ns1.mydomain.com  64.94.117.195  39,565
ns2.mydomain.com  216.52.121.228  39,536
ns3.mydomain.com  66.150.161.130  38,776
ns1.secure.net  192.220.124.10  38,617
ns2.secure.net  192.220.125.10  38,605
ns4.mydomain.com  63.251.83.74  38,586
ns8.san.yahoo.com  66.218.71.205  35,537
ns9.san.yahoo.com  216.109.116.20  35,534
ns2.ultsearch.com  212.100.230.160  35,498
ns1.ultsearch.com  213.130.63.232  35,497

Survey Limitations
Our survey, while having an impressive 11,046,645 sites and 6,833,381 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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