[6bone] prefix allocation statistics

[frank at troy-networks.com (Frank P. Troy)]

Hi,

Can someone tell me the best method for finding current prefix allocation
statistics?  I've already checked the CIDR and IANA and came up blank.  I
am not looking for who they were specifically assigned to (although that
would also be nice), just the size and numbers.   For instance how many
/32's, /48's, etc, or if any organizations besides the registries  have
received less than /32. 

Thanks
Frank