The DNS root servers are thirteen DNS server clusters which are responsible for delegating DNS requests to the top level domain (TLD) nameservers.

The DNS Root Servers

A.ROOT-SERVERS.NET.

Operator: VeriSign Naming and Directory Services
IP Address: 198.41.0.4

B.ROOT-SERVERS.NET.

Operator: Information Sciences Institute
IP Address: 192.228.79.201

C.ROOT-SERVERS.NET.

Operator: Cogent Communications
IP Address: 192.33.4.12

D.ROOT-SERVERS.NET.

Operator: University of Maryland
IP Address: 128.8.10.90

E.ROOT-SERVERS.NET.

Operator: NASA Ames Research Center
IP Address: 192.203.230.10

F.ROOT-SERVERS.NET.

Operator: Internet Systems Consortium, Inc.
IP Address: 192.5.5.241

G.ROOT-SERVERS.NET.

Operator: U.S. DOD Network Information Center
IP Address: 192.112.36.4

H.ROOT-SERVERS.NET.

Operator: Autonomica/NORDUnet
IP Address: 128.63.2.53

I.ROOT-SERVERS.NET.

Operator: Autonomica/NORDUnet
IP Address: 192.36.148.17

J.ROOT-SERVERS.NET.

Operator: VeriSign Naming and Directory Services
IP Address: 192.58.128.30

K.ROOT-SERVERS.NET.

Operator: Reseaux IP Europeens – Network Coordination Centre
IP Address: 193.0.14.129

L.ROOT-SERVERS.NET.

Operator: Internet Corporation for Assigned Names and Numbers
IP Address: 198.32.64.12

M.ROOT-SERVERS.NET.

Operator: WIDE Project
IP Address: 202.12.27.33

The DNS root servers have not been changed between 29 January, 2004 and today — 22 November, 2006.

To view the canonical list of current DNS root servers, view the named.root file at Internic.

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