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

Mike Tancsa mike at sentex.net
Thu Sep 26 17:12:55 UTC 2002


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 at sentex.net
Providing Internet since 1994                    www.sentex.net
Cambridge, Ontario Canada			  www.sentex.net/mike




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