English | Deutsch | Español | Português
 ID de Usuario:
Nuevo usuario
 Survey Data Mining: Home | Order/Renew | FAQ | Archive | Glossary

You are viewing an outdated report.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

DNS Site Operator
February 1st, 2007

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.

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


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
dns4.name-services.com  216,592
dns2.name-services.com  216,317
dns1.name-services.com  216,290
dns3.name-services.com  216,131
dns5.name-services.com  216,118
yns1.yahoo.com  118,111
yns2.yahoo.com  118,111
ns8.san.yahoo.com  114,124
ns9.san.yahoo.com  114,122
dns.technorail.com  104,184
dns2.technorail.com  104,157
ns1.dreamhost.com  88,760
ns2.dreamhost.com  88,742
ns3.dreamhost.com  86,168
ns1.ipowerweb.net  83,696
ns.xinnetdns.com  82,330
ns.xinnet.cn  82,229
ns2.ipowerweb.net  80,682
wsc1.jomax.net  80,338
wsc2.jomax.net  80,327

Survey Limitations
Our survey, while having an impressive 24,772,946 sites and 14,438,354 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).

Principal | Acerca de Nosotros | Contáctenos | Programas de Asociado | Developer APIs | Privacidad | Listas de Correo | Abuso
Auditorías de Seguridad | DNS Administrado | Monitoreo de Red | Analizador de Sitio | Informes de Investigación de Internet
Prueba de Web

© 1998-2020 E-Soft Inc. Todos los derechos reservados.