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Re: routing invalid IP addresses

  • From: Christopher X. Candreva
  • Date: Sat Feb 21 11:26:22 2004

On Sat, 21 Feb 2004, Geo. wrote:

> traceroute to, that's what made me think it was invalid.

It has nothing to do with the x.y.255.z -- the is IANA reserved
space.  If you had given the whole IP in the first place you could have
saved yourself some abuse. :-)

You are right in the sense that it has been recommended for a while that ISP's
filter invalid traffic outbound from their network, to prevent their
customers from spoofing.  However, given the number of incidents of
hijacking recently, it's entirely possible whoever is using this actually
has their own BGP feed.

[westnet]:~$ whois

BW whois 3.4 by Bill Weinman (
Copyright 1999-2003 William E. Weinman
from [cached Sat Feb 21 16:18:16 2004 UTC]

OrgName:    Internet Assigned Numbers Authority
OrgID:      IANA
Address:    4676 Admiralty Way, Suite 330
City:       Marina del Rey
StateProv:  CA
PostalCode: 90292-6695
Country:    US

NetRange: -
NetName:    RESERVED-240
NetHandle:  NET-240-0-0-0-0
NetType:    IANA Special Use
Comment:    Please see RFC 3330 for additional information.
Updated:    2002-10-14

OrgAbuseHandle: IANA-IP-ARIN
OrgAbuseName:   Internet Corporation for Assigned Names and Number
OrgAbusePhone:  +1-310-301-5820
OrgAbuseEmail:  [email protected]

OrgTechHandle: IANA-IP-ARIN
OrgTechName:   Internet Corporation for Assigned Names and Number
OrgTechPhone:  +1-310-301-5820
OrgTechEmail:  [email protected]

# ARIN WHOIS database, last updated 2004-02-20 19:15
# Enter ? for additional hints on searching ARIN's WHOIS database.

Chris Candreva  -- [email protected] -- (914) 967-7816
WestNet Internet Services of Westchester