nanog mailing list archives

Sprint (1239) blackhole ? Or bogus /32 route ?


From: Mike Tancsa <mike () sentex net>
Date: Thu, 26 Sep 2002 13:12:55 -0400


Hi,
I am trying to figure out if either sprint (as1239) has blackholed a single IP address in my network or something strange is up. If anyone has transit connectivity to AS1239, can you tell me if Sprint is sending 199.212.134.9/32 as a prefix ??

e.g. from as1239's website looking glass http://oxide.sprintlink.net/cgi-bin/glass.pl (only a traceroute interface)

sl-bb20-ana>trace 199.212.134.9

 Type escape sequence to abort.
 Tracing the route to smtp2.sentex.ca (199.212.134.9)

   1  *  *  *


Yet, on that same subnet all else is fine

sl-bb20-ana>trace 199.212.134.1

 Type escape sequence to abort.
 Tracing the route to ns.sentex.ca (199.212.134.1)

   1 sl-bb22-ana-14-0.sprintlink.net (144.232.1.177) 4 msec
     sl-bb23-fw-10-2.sprintlink.net (144.232.18.241) 24 msec
     sl-bb22-ana-14-0.sprintlink.net (144.232.1.177) 0 msec
   2 sl-bb25-chi-6-0.sprintlink.net (144.232.9.25) 56 msec
     sl-bb22-fw-10-1.sprintlink.net (144.232.9.250) 24 msec
     sl-bb25-chi-6-0.sprintlink.net (144.232.9.25) 52 msec
   3 sl-bb22-chi-11-0.sprintlink.net (144.232.18.121) 48 msec
     sl-bb25-chi-15-0.sprintlink.net (144.232.26.82) 52 msec
     sl-bb22-chi-11-0.sprintlink.net (144.232.18.121) 44 msec
   4 sl-gw33-chi-10-0.sprintlink.net (144.232.26.42) 52 msec
     sl-gw33-chi-9-0.sprintlink.net (144.232.26.22) 60 msec
     sl-gw33-chi-10-0.sprintlink.net (144.232.26.42) 48 msec
   5 sl-splk-telus-1-0.sprintlink.net (144.223.35.30) 48 msec 52 msec 48 msec
   6 chcnil23gr01.bb.telus.com (154.11.11.90) [AS 852] 48 msec
     chcnil23gr01.bb.telus.com (154.11.11.94) [AS 852] 48 msec
     chcnil23gr01.bb.telus.com (154.11.11.90) [AS 852] 48 msec
   7 toroonxnbr00.bb.telus.com (154.11.11.5) [AS 852] 56 msec 64 msec 56 msec
   8 toroonzddr00.bb.telus.com (154.11.6.67) [AS 852] 64 msec 56 msec 64 msec
9 peer.toroonzddr00.bb.telus.com (209.115.141.5) [AS 852] 60 msec 64 msec 64 msec
  10 iolite.sentex.ca (209.112.4.3) [AS 15290] 64 msec 60 msec 64 msec
  11 ns.sentex.ca (199.212.134.1) [AS 11647] 64 msec 64 msec 60 msec
 sl-bb20-ana>


I am guessing a blackhole, but I dont see where they told me or what list that IP address is on... www.openrbl.org shows clean and all the box does is outbound smtp...

Anyone else see strange things like this ?

        ---Mike
--------------------------------------------------------------------
Mike Tancsa,                                      tel +1 519 651 3400
Sentex Communications,                            mike () sentex net
Providing Internet since 1994                    www.sentex.net
Cambridge, Ontario Canada                         www.sentex.net/mike


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