Special-Use Domain Names
2012-07-06
2025-10-06
Special-Use Domain Names
Standards Action or IESG Approval
The "Special Use" designation applies to both the listed domains and their subdomains.
alt.
6tisch.arpa.
eap.arpa.
eap-noob.arpa. (DEPRECATED)
home.arpa.
10.in-addr.arpa.
254.169.in-addr.arpa.
16.172.in-addr.arpa.
17.172.in-addr.arpa.
18.172.in-addr.arpa.
19.172.in-addr.arpa.
20.172.in-addr.arpa.
21.172.in-addr.arpa.
22.172.in-addr.arpa.
23.172.in-addr.arpa.
24.172.in-addr.arpa.
25.172.in-addr.arpa.
26.172.in-addr.arpa.
27.172.in-addr.arpa.
28.172.in-addr.arpa.
29.172.in-addr.arpa.
30.172.in-addr.arpa.
31.172.in-addr.arpa.
170.0.0.192.in-addr.arpa.
171.0.0.192.in-addr.arpa.
168.192.in-addr.arpa.
8.e.f.ip6.arpa.
9.e.f.ip6.arpa.
a.e.f.ip6.arpa.
b.e.f.ip6.arpa.
ipv4only.arpa.
resolver.arpa.
service.arpa.
example.
example.com.
example.net.
example.org.
invalid.
local.
localhost.
onion.
test.