Dear Colleagues, The RIPE NCC received the IPv6 address range 2001:4600::/23 from the IANA in August 2004. You may want to adjust any filters you have in place accordingly. More information on the IP space administered by the RIPE NCC can be found on our web site at: <https://www.ripe.net/ripe/docs/smallest-alloc-sizes.html> Regards, -- leo vegoda Registration Services Manager RIPE NCC