ISC operates one of the 13 root DNS servers as a public service to the Internet. We have operated F-Root for IANA since 1994.
F-root answers queries over IPv4 on 192.5.5.241, and over IPv6 on 2001:500:2f::f(Note the change of IPv6 address as of 22 January 2008). Service for f.root-servers.net is provided by a distributed collection of nameserver nodes located in many places, using a Hierarchical Anycast technique running ISC BIND 9.
Network operators can improve their access to the F Root Nameserver, and hence the reliability of the DNS in general, by peering with ISC at the exchange points where we maintain a presence. For information about peering with ISC, see our Peering Information Page.
On January 4th, 2008, ISC signed a Mutual Responsibilities Agreement with ICANN, which identifies mutual responsibilities and is another step to enhance Internet stability.
