2012-07-06 2013-02-21 Standards Action and IESG Approval The "Special Use" designation applies to both the listed domains and their subdomains. 10.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. 168.192.in-addr.arpa. 254.169.in-addr.arpa. 8.e.f.ip6.arpa. 9.e.f.ip6.arpa. a.e.f.ip6.arpa. b.e.f.ip6.arpa. example. example.com. example.net. example.org. invalid. local. localhost. test.