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DNS Site Operator
July 1st, 2024

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
a.share-dns.com  172.64.52.212  532,474
b.share-dns.net  172.64.52.239  532,474
jm1.dns.com  218.98.111.214  291,606
jm2.dns.com  183.253.57.200  291,606
dns.technorail.com  94.177.210.13  259,475
dns2.technorail.com  95.110.136.8  259,475
dns3.arubadns.net  95.110.220.5  259,027
dns4.arubadns.cz  81.2.216.125  259,026
ns5.kasserver.com  85.13.128.3  244,679
ns6.kasserver.com  85.13.159.101  244,673
ns1.bluehost.com  162.159.24.80  234,221
ns2.bluehost.com  162.159.25.175  234,209
ns1.siteground.net  75.2.77.104  221,619
ns2.siteground.net  99.83.229.113  221,618
ns02.one.com  185.10.11.10  215,419
ns01.one.com  195.206.121.10  215,411
ns1.dreamhost.com  162.159.26.14  208,155
ns2.dreamhost.com  162.159.26.81  208,151
ns3.dreamhost.com  162.159.27.84  208,121
ns1.dns.ne.jp  61.211.236.1  198,767

Survey Limitations
Our survey, while having an impressive 65,947,653 sites and 23,316,021 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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