NASA operates E.root-servers.net, one of the thirteen logical Internet Root name servers. NASA cooperates with the eleven other Root Server Operators to provide authoritative data for the DNS Root Zone. The E-Root Server system is operated by the Information Technology Operations Division at NASA Ames Research Center under the direction of the Ames Office of the Chief Information Officer.

E-Root receives DNS queries over IPv4 at and over IPv6 at 2001:500:A8::E.

The Domain Name System is a distributed hierarchical database of resource records that permit (among other things) the translation of hostnames into IP addresses and vice versa. The root of this hierarchy is anchored on 13 domain name servers scattered across the globe. E-Root uses IP Anycast to provide service from a number of locations throughout the world which may change from time to time.

E-Root Server Locations

  • Moffett Field, CA
  • Amsterdam, Netherlands
  • Atlanta, United States
  • Auckland, New Zealand
  • Beaverton, United States
  • Beirut, Lebanon
  • Berlin, Germany
  • Boston, United States
  • Buenos Aires, Argentina
  • Burbank, United States
  • Cape Town, South Africa
  • Chelmsford, United States
  • Chicago, United States
  • Dar es Salaam, Tanzania
  • Denver, United States
  • Dhaka, Bangladesh
  • Dublin, Ireland
  • Frankfurt, Germany
  • Istanbul, Turkey
  • Jakarta, Indonesia
  • Johannesburg, South Africa
  • Kathmandu, Nepal
  • London, United Kingdom
  • Los Angeles, United States
  • Manila, Philippines
  • Maputo, Mozambique
  • Miami, United States
  • Munich, Germany
  • Nairobi, Kenya
  • Neuquen, Argentina
  • New York, United States
  • Ottawa, Canada
  • Palo Alto, United States
  • Paris, France
  • Perth, Australia
  • Port Louis, Mauritius
  • Port of Spain, Trinidad and Tobago
  • Prague, Czech Republic
  • Roseau, Dominica
  • Santa Ana, United States
  • Seattle, United States
  • Seoul, South Korea
  • Singapore, Singapore
  • Sofia, Bulgaria
  • St. George's, Grenada
  • Sydney, Australia
  • Tokyo, Japan
  • Toronto, Canada
  • Turin, Italy
  • Vienna, Austria
  • Warsaw, Poland
  • Washington, United States
  • Wellington, New Zealand
  • Zurich, Switzerland


The root operators collect and publish root server system metrics in accordance with RSSAC-002, the RSSAC Advisory on Measurements of the Root Server System. The E-root RSSAC-002 data is published daily.

Root Server Organizations

NASA, as the operator of the root nameserver "E", recognizes the following organizations as current root nameserver operators and endeavors to coordinate operational service with them:

  • Verisign, Inc. (A/J)
  • University of Southern California, Information Sciences Institute (B)
  • Cogent Communications, Inc. (C)
  • University of Maryland (D)
  • National Aeronautics and Space Administration (NASA) Ames Research Center (E)
  • Internet Systems Consortium, Inc. (F)
  • US Department of Defense, Defense Information Systems Agency (G)
  • US Army Research Laboratory (H)
  • Netnod (I)
  • Réseaux IP Européens Network Coordination Centre (RIPE NCC) (K)
  • Internet Corporation for Assigned Names and Numbers (ICANN) (L)
  • Widely Integrated Distributed Environment (WIDE) Project (M)