ICANN Managed Root Server

ICANN Managed Root Server (IMRS) DNS system operates at

• Name label L.ROOT-SERVERS.NET.
• IPv4 address 199.7.83.42 from the ranges 199.7.83.0/24 and 199.7.82.0/23
  
• IPv6 address 2001:500:9f::42 from the ranges 2001:500:9f::/48 and 2001:500:9e::/47
  
• All these prefix ranges are announced from AS20144.

The service uses the Name Server Daemon (NSD) from NLNetLabs, and Knot DNS from CZ.NIC Labs.

Some useful information:

• IMRS follows the core Root Server Principles, identified in RSSAC037 document.
• Hosting an IMRS in your network:
  • How to host an ICANN Managed Root Server (IMRS) inside your network
  • F.A.Q. about hosting an IMRS-Single in your network
  • IMRS L-Single Agreement
• Want to know our locations and where are we currently serving IMRS? Check out the world coverage presence.
• IMRS DNS Metrics, Stats telemetry and usage, powered by DNS-STATS
• IMRS Peering information and our number resources
• IMRS RSSAC responses (measurements and other information)
• IMRS Activities and Incident reports
• Our regular scheduled maintenance windows

OLD NOTICES:

• 2016 IPv6 Address Renumbering for ICANN Operated Root Server (L.ROOT-SERVERS.NET.)
• 2011 IN-ADDR.ARPA. Name Servers change
• 2007 IP Address change (renumbering) for L.ROOT-SERVERS.NET.