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You are viewing an outdated report.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
September 1st, 2006

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
dns2.name-services.com  216.52.184.230  160,730
dns1.name-services.com  69.25.142.1  160,684
dns3.name-services.com  63.251.92.193  160,562
dns5.name-services.com  70.42.37.1  160,470
dns4.name-services.com  64.74.96.242  160,362
dns.technorail.com  62.149.128.2  91,550
dns2.technorail.com  62.149.132.2  91,547
yns1.yahoo.com  66.218.71.205  86,545
yns2.yahoo.com  216.109.116.20  86,533
ns.xinnetdns.com  210.51.170.66  81,842
ns.xinnet.cn  210.51.171.209  81,725
ns1.ipowerweb.net  64.70.61.130  78,646
wsc1.jomax.net  64.202.165.4  77,674
wsc2.jomax.net  68.178.211.104  77,667
ns1.livedns.co.uk  213.171.192.250  73,046
ns2.livedns.co.uk  213.171.193.250  73,032
ns1.ipowerdns.com  66.235.217.202  71,699
ns8.san.yahoo.com  66.218.71.205  70,991
ns9.san.yahoo.com  216.109.116.20  70,990
ns1.dreamhost.com  66.33.206.206  68,358

Survey Limitations
Our survey, while having an impressive 23,126,859 sites and 13,411,304 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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