By the end of March 2002, none of the name servers for ip6.arpa. were accessible with IPv6 as the transport protocol, but at least 3 of the name servers for ip6.int. seem to be IPv6-enabled.

In 2004, there is now one name server of ip6.arpa accessible in IPv6.

For a while implementing both reverse subtrees should be considered. How this is to be done can be deducted from the following example which refers to the RIPE NCC’s address aggregate:

The goal for the early operations phase of 6NET is to strongly encourage all the participants in the 6NET project to get the proper reverse delegations for their sTLAs in place - both in ip6.int. (for supporting older client versions) and in ip6.arpa. (to comply with the more stable solution).