A few weeks ago the RIPE NCC introduced the production release of the IP Analyser; an LIR Portal tool to help you manage and analyse your allocations, assignments, free space and invalids: https://lirportal.ripe.net/ipanalyser/ (requires member login) Currently it only provides IPv4 functionality and we are in the process of gathering IPv6 feature requirements so we can plan a roadmap for the beginning of 2013. This is why I would like to know what kind of functionally you would like the IP Analyser to provide. I'm looking for input for invalid or incorrect DB assignments, and tools to make your IP address management easier. As warnings, the application could for example display all RIPE DB objects which have an incorrect prefix length; a sanity checker basically. So if you created an inetnum or route object with prefix "2001:0DB8:0401::/40", the application would tell you that you probably meant to create "2001:0DB8:0400::/40". For tools, the IP Analyser currently suggests prefixes out of your free IPv4 allocations for assignments, but this is not very useful in IPv6 (i.e. please suggest me a free /48 out of my /32). You would probably benefit more from a subnet calculator, an address notation validator or something else entirely. I'm looking forward to your input. Cheers, Alex Band Product Manager RIPE NCC