Internet Assigned Numbers Authority

Locally-Served DNS Zones

Created
2011-06-10
Last Updated
2024-09-05
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

XML
HTML
Plain text

Registries included below

IPv4 Locally-Served DNS Zone Registry

Registration Procedure(s)
IETF Review
Reference
[RFC6303]
Available Formats

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

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

CSV
Zone Description Reference
HOME.ARPA Homenet Special-Use Domain [RFC8375]
RESOLVER.ARPA DNS Resolver Special-Use Domain [RFC9462]
SERVICE.ARPA DNS‑SD Service Registration Protocol Special-Use Domain [RFC-ietf-dnssd-srp-25]

service.arpa Subdomain

Registration Procedure(s)
Standards Action or IESG Approval
Reference
[RFC-ietf-dnssd-srp-25]
Available Formats

CSV
Subdomain Name Description Reference
default.service.arpa. Default domain for SRP updates [RFC-ietf-dnssd-srp-25]