Special-Use Domain Names

Created
2012-07-06
Last Updated
2025-10-06
Available Formats

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Registry Included Below

Special-Use Domain Names

Registration Procedure(s)
Standards Action or IESG Approval
Reference
[RFC6761]
Note
The "Special Use" designation applies to both the listed domains and their subdomains.
Available Formats

CSV
Name Reference
alt. [RFC9476]
6tisch.arpa. [RFC9031]
eap.arpa. [RFC-ietf-emu-eap-arpa-10]
eap-noob.arpa. (DEPRECATED) [RFC9140][RFC-ietf-emu-eap-arpa-10]
home.arpa. [RFC8375]
10.in-addr.arpa. [RFC6761]
254.169.in-addr.arpa. [RFC6762]
16.172.in-addr.arpa. [RFC6761]
17.172.in-addr.arpa. [RFC6761]
18.172.in-addr.arpa. [RFC6761]
19.172.in-addr.arpa. [RFC6761]
20.172.in-addr.arpa. [RFC6761]
21.172.in-addr.arpa. [RFC6761]
22.172.in-addr.arpa. [RFC6761]
23.172.in-addr.arpa. [RFC6761]
24.172.in-addr.arpa. [RFC6761]
25.172.in-addr.arpa. [RFC6761]
26.172.in-addr.arpa. [RFC6761]
27.172.in-addr.arpa. [RFC6761]
28.172.in-addr.arpa. [RFC6761]
29.172.in-addr.arpa. [RFC6761]
30.172.in-addr.arpa. [RFC6761]
31.172.in-addr.arpa. [RFC6761]
170.0.0.192.in-addr.arpa. [RFC8880]
171.0.0.192.in-addr.arpa. [RFC8880]
168.192.in-addr.arpa. [RFC6761]
8.e.f.ip6.arpa. [RFC6762]
9.e.f.ip6.arpa. [RFC6762]
a.e.f.ip6.arpa. [RFC6762]
b.e.f.ip6.arpa. [RFC6762]
ipv4only.arpa. [RFC8880]
resolver.arpa. [RFC9462]
service.arpa. [RFC9665]
example. [RFC6761]
example.com. [RFC6761]
example.net. [RFC6761]
example.org. [RFC6761]
invalid. [RFC6761]
local. [RFC6762]
localhost. [RFC6761]
onion. [RFC7686]
test. [RFC6761]