BGP Peering

Network with F Root

ISC hosts a variety of community resources in its facilities in Northern California. Network operators can improve the reliability and performance of their network access to these resources by peering with ISC at the PAIX and Equinix locations in the San Francisco Bay Area/Silicon Valley.

ISC is also engaged in a project to deploy numerous instances of the F-root nameserver using an anycast routing technique. These remote instances are usually deployed close to exchange points, and network operators are welcome to peer with us there to increase their visibility of (and improve their access to) the F root nameserver.

Peering Policy

ISC operates an open peering policy. ISC reserves the right to discontinue peering with other organisations which do not respond appropriately to reports of network abuse, or to organisations which do not follow the technical guidelines for propagation of the F-Root service supernet, as described below.

Contact Information

NOC phone: +1 650 423 1310
NOC e-mail: (preferred)
INOC-DBA: 3557
New sessions: Web Form (preferred) or

Peering Locations and Details

ISC fully participates in the PeeringDB project. PeeringDB has all of our most up-to-date locations and peering details.

If you’re not familiar with PeeringDB, you can follow these simple instructions:

  • Visit, and log-in with the guest credentials listed on the front page, or setup an account, if you’d prefer.
  • Once logged in, click on Networks located on the left column under Search Records.
  • Enter “ISC” in the Company Name field and click search.
  • Clicking on the resultant “ISC” search result will lead you to the page with all our details.

Routing Policy

Networks that filter based on Routing Registry objects should use:

AS<peer asn>:AS-SET

as the filter object. For instance if you peer with ISC AS 30132 in Amsterdam use:


to filter that session.

ISC operates Global Nodes for the F-root nameserver service in San Jose (California), Palo Alto (California), Chicago (Illinois), New York City (New York), and Atlanta (Georgia); all inside of AS1280 and advertise to the entire Internet.

All other nodes are Local Nodes for F-root. Local Nodes advertise F’s to peers with the well-known community string attribute no-export set. This is done to prevent accidental transit of F-root service supernet; each Local Node is only intended to serve a local community of networks. It is not appropriate for to be propagated for transit except by prior arrangement with ISC.

Network operators having a requirement to apply differing policy should contact and explain their requirements, so that suitable arrangements can be made.

Last modified: November 2, 2016 at 10:39 pm