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