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You are viewing an outdated report. The latest version of this report was published on June 1st, 2024


    
DNS Site Operator
November 1st, 2005

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
dns3.name-services.com  63.251.92.193  127,609
dns4.name-services.com  64.74.96.242  127,602
dns2.name-services.com  216.52.184.230  127,582
dns1.name-services.com  69.25.142.1  127,581
dns5.name-services.com  212.118.243.118  127,573
yns2.yahoo.com  216.109.116.20  83,855
yns1.yahoo.com  66.218.71.205  83,855
ns8.san.yahoo.com  66.218.71.205  82,873
ns9.san.yahoo.com  216.109.116.20  82,872
ns1.ipowerweb.net  64.70.61.130  66,868
dns.technorail.com  62.149.128.2  66,136
dns2.technorail.com  62.149.132.2  66,135
ns2.ipowerweb.net  66.235.217.200  64,310
ns.xinnet.cn  202.106.124.194  62,000
ns.xinnetdns.com  210.51.170.66  61,974
ns1.livedns.co.uk  213.171.192.250  60,822
ns2.livedns.co.uk  213.171.193.250  60,818
wsc2.jomax.net  64.202.167.50  59,772
wsc1.jomax.net  64.202.165.4  59,766
ns1.ipowerdns.com  66.235.217.202  58,401

Survey Limitations
Our survey, while having an impressive 17,949,167 sites and 11,115,860 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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