[Apologies for duplicate emails.] Dear Colleagues, At the RIPE 62 Meeting we were asked to consider the attributes in DOMAIN objects. With the removal of any hierarchy in reverse delegations and the removal of forward domain data there is no longer any use case for the "mnt-lower:" attribute. Other attributes that are considered to be used only for forward domains are: - "refer:" - "sub-dom:" - "dom-net:" The statistics listed below show how many of the above attributes have been added to reverse delegations and ENUMs. The RIPE NCC would like to ask the community if anyone sees any justification for the use of these attributes in reverse delegations or ENUMs. If there is no justification, all four of these attributes can be removed from all DOMAIN objects when the last two TLD operators move their data out of the RIPE Database. This is anticipated to occur by the end of 2011. To keep any discussion focussed please send any comments or feedback to the DNS Working Group Mailing list. Regards Denis Walker Business Analyst RIPE NCC Database Group Statistics ---------- Number of each attribute used in reverse delegations or ENUMs and the number of unique maintainers who manage these objects. "refer:" = 6 unique maintainers = 1 "sub-dom:" = 271 unique maintainers = 23 "dom-net:" = 2219 unique maintainers = 140 "mnt-lower:" = 46485 unique maintainers = 4208