Internet Assigned Numbers Authority Locally-Served DNS Zones Created 2011-06-10 Last Updated 2022-11-07 Note Once a zone is added to one of these subregistries, it is effectively added permanently; once an address range starts being configured as a local zone in systems on the Internet, it will be impossible to reverse those changes. Available Formats [IMG] XML [IMG] HTML [IMG] Plain text Registries included below • IPv4 Locally-Served DNS Zone Registry • IPv6 Locally-Served DNS Zone Registry • Transport-Independent Locally-Served DNS Zone Registry IPv4 Locally-Served DNS Zone Registry Registration Procedure(s) IETF Review Reference [RFC6303] Available Formats [IMG] CSV Zone Description Reference 10.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 16.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 17.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 18.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 19.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 20.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 21.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 22.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 23.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 24.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 25.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 26.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 27.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 28.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 29.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 30.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 31.172.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 168.192.IN-ADDR.ARPA RFC1918 Zone [RFC6303] 0.IN-ADDR.ARPA IPv4 "THIS" NETWORK [RFC6303] 127.IN-ADDR.ARPA IPv4 LOOPBACK NETWORK [RFC6303] 254.169.IN-ADDR.ARPA IPv4 LINK LOCAL [RFC6303] 2.0.192.IN-ADDR.ARPA IPv4 TEST-NET-1 [RFC6303] 100.51.198.IN-ADDR.ARPA IPv4 TEST-NET-2 [RFC6303] 113.0.203.IN-ADDR.ARPA IPv4 TEST-NET-3 [RFC6303] 255.255.255.255.IN-ADDR.ARPA IPv4 BROADCAST [RFC6303] 64.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 65.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 66.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 67.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 68.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 69.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 70.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 71.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 72.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 73.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 74.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 75.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 76.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 77.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 78.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 79.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 80.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 81.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 82.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 83.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 84.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 85.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 86.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 87.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 88.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 89.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 90.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 91.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 92.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 93.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 94.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 95.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 96.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 97.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 98.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 99.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 100.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 101.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 102.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 103.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 104.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 105.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 106.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 107.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 108.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 109.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 110.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 111.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 112.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 113.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 114.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 115.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 116.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 117.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 118.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 119.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 120.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 121.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 122.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 123.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 124.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 125.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 126.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] 127.100.IN-ADDR.ARPA RFC6598 Zone [RFC7793] IPv6 Locally-Served DNS Zone Registry Registration Procedure(s) IETF Review Reference [RFC6303] Available Formats [IMG] CSV Zone Description Reference 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA IPv6 Unspecified Address [RFC6303] 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA IPv6 Loopback Address [RFC6303] D.F.IP6.ARPA IPv6 Locally Assigned Local Address [RFC6303] 8.E.F.IP6.ARPA IPv6 Link Local Address [RFC6303] 9.E.F.IP6.ARPA IPv6 Link Local Address [RFC6303] A.E.F.IP6.ARPA IPv6 Link Local Address [RFC6303] B.E.F.IP6.ARPA IPv6 Link Local Address [RFC6303] 8.B.D.0.1.0.0.2.IP6.ARPA IPv6 Example Prefix [RFC6303] Transport-Independent Locally-Served DNS Zone Registry Registration Procedure(s) IETF Review Reference [RFC8375] Available Formats [IMG] CSV Zone Description Reference HOME.ARPA Homenet Special-Use Domain [RFC8375] RESOLVER.ARPA DNS Resolver Special-Use Domain [RFC9462] Licensing Terms