F-Root System


  • Enables users around the world to find top-level domains such as .com, .uk, .edu
  • Reliable anycast network with over 125 nodes
  • Hosted in local IXes, and on the Cloudflare network, managed by ISC

Contact ISC


 Open Source


  • BIND 9 DNS software (Authoritative + Recursive DNS + Tools)
  • Kea Modern DHCP server
  • ISC DHCP Client, relay, and server
  • We get most of our financial support from supporting open source. This keeps us aligned with our core mission - supporting the Internet.
    Support independent developers
  • We have operated F-root since 1994. F is one of 13 root nodes of the Domain Name System (DNS), with over 125 any-cast nodes around the world.
    Part of the Internet infrastructure
  • Contact us, ask our active user community, check out our extensive on-line knowledge base or try some of the many tools and resources available on the Internet.
  • ISC engineers have written over 70 of the technical standards that are essential to interoperability on the Internet. There is no vendor lock-in with standards-based open source.
    Creating and implementing Internet standards is part of the mission
  • Open Source provides building blocks for innovation. New networks and services can be built quickly using standards-based open source components.
    Many commercial and non-commercial products are based on ISC Open Source
  • Support an open Internet by supporting Open Source.  Free, quality software makes connection accessible for those with fewer resources.
    Let's make the Internet accessible to all

Last modified: February 4, 2019 at 11:00 am