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You are viewing an outdated report.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


    
DNS Site Operator
July 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
dns01.exodus.net  209.1.222.244  4,629
dns02.exodus.net  209.1.222.245  4,574
dns03.exodus.net  209.1.222.246  4,530
dns04.exodus.net  209.1.222.247  4,446
sca02.sec.dns.exodus.net  209.1.235.120  749
sca04.auth.dns.exodus.net  216.32.104.10  413
sca03.auth.dns.exodus.net  209.185.253.230  412
sca03.sec.dns.exodus.net  216.32.126.150  134
exodus.hipdesign.com  63.236.10.61  103
exodus.ssmnet.net  66.162.55.131  23
ns3.exodus.net  206.79.240.13  22
ns2.nj.exodus.net  209.1.10.234  20
pdns01.lndn01.exodus.net  212.62.1.87  19
exodus2.theworldat.com  209.101.130.5  17
exodus.theworldat.com  209.101.130.4  17
wlhm02sdns01.exodus.net  64.28.79.26  16
ns2.exodus.net  207.82.198.150  16
ns.exodus.net  206.79.230.10  15
exodus.icorp.net  204.107.221.30  15
exodus.eccentrichosting.net  216.218.233.239  15

Survey Limitations
Our survey, while having an impressive 11,454,723 sites and 7,010,330 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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