Smurf Amps List
Jon Lewis
jlewis at inorganic5.fdt.net
Sat Jun 13 21:27:06 UTC 1998
On Sat, 13 Jun 1998, Jared Mauch wrote:
> On Sat, Jun 13, 1998 at 07:10:41AM -0400, D'Arcy J.M. Cain wrote:
> > Thus spake Jared Mauch
> > > The page can be found at
> > > http://puck.nether.net/~jared/smurfblocks.html
> >
> > Why not list the netmask of the netblock as well?
>
> In most cases you can figure out the netmasks. These blocks
> were only checked at the very beginning of their space based on
> the bgp announcement as viewed by our network. You can look at
> our AS1225 feed at route-views.oregon-ix.net
Checking only the beginning of nets for which you receive BGP
announcements fails to take into account the vast numbers of single-homed
networks which are part of large supernets. i.e. One of FDT's old UUNet
IP blocks was a /20 in 205.228.0.0/14. There are only a few dozen
announcements for: sh ip ro 205.228.0.0 255.252.0.0 longer
------------------------------------------------------------------
Jon Lewis <jlewis at fdt.net> | Spammers will be winnuked or
Network Administrator | drawn and quartered...whichever
Florida Digital Turnpike | is more convenient.
______http://inorganic5.fdt.net/~jlewis/pgp for PGP public key____
More information about the NANOG
mailing list