Re: Filtering Unregistered Blocks (WAS: small vent)

[bmanning () vacation karoshi com]

> At 12:45 PM 6/28/98 PDT, Dave Rand wrote:
>
> > This has, in fact, happened before.  One of the reasons that the unallocated
> > spaces are listed on the RBL.
>
> This topic comes up every now and then.  I've searched the ARIN site and
> found some very outdated lists (some as old as 1996, but none newer than
> Feb, 1998).  I've searched the archives, but no one seems to have an answer
> - except you.  How do you tell what is and what is not allocated?

        Well, there is the problem of where to look.  There is a pretty
        comprehensive list of the delegation status of blocks at the
        /8 level that is pretty accurate.  I suspect that the RIRs can
        provide pretty good detail for the recent (1996 and later) delegations.

        The historical delegations are -much- harder to track.  I've been
        spending some time on clearing up detail on older /8 blocks
        and this data may make it into the publicly visable registries
        if they want it.  128.0.0.0/8 is done and I've got most of
        192.0.0.0/8 complete.

-- bill