Verisign operates j.root-servers.net, one of the thirteen logical Internet Root name servers. Verisign cooperates with the eleven other Root Server Operators to provide authoritative data for the DNS Root Zone.

J-root receives DNS queries over IPv4 at and over IPv6 at 2001:503:c27::2:30.

J-root uses IP Anycast to provide service from a large number of locations throughout the world, which may change from time to time.

Interactive Root Server System Metrics for J-root are updated daily in accordance with the RSSAC Recommendation on Measurements of the Root Server System. The raw data is also available.

Are you interested in hosting a J-root instance at your exchange point or on your own IP network? For more information about this offering, including minimum technical requirements and access to our automated request system, please visit http://www.verisigninc.com/rirs.


In 1997, j.root-servers.net was added as the 10th root name server. Operated by Network Solutions, it was initially co-located with A-root and used the IP address

In 2000, Network Solutions, Inc. was acquired by Verisign.

In 2002, J-root was renumbered to, thus allowing it to be anycasted.

In 2008, the IPv6 address 2001:503:c27::2:30 was added for J-root.