ARIN

Thus spake "Brian Dickson" <briand at ca.afilias.info>
> Here's a thought:
>
> For any policy that requires usage of blocks assigned by $RIR, in
> addition to testing reachability of hosts in the block, require that the
> full block itself be seen in the DFZ (i.e. as a covering aggregate).

There is no single, coherent DFZ.  ARIN policy also allows assignment of 
blocks for private use.

S

Stephen Sprunk         "God does not play dice."  --Albert Einstein
CCIE #3723         "God is an inveterate gambler, and He throws the
K5SSS        dice at every possible opportunity." --Stephen Hawking