Problems with 100.42.32.0/20

Josh Baird joshbaird at gmail.com
Tue Jan 3 11:42:44 CST 2012


Hi,

We just received 100.42.32.0/20 from ARIN.  According to ARIN, this
block was received from IANA in November 2010 and was issued to us in
November 2011.  Since we started using it, we have seen many problems
with different Geo-IP providers incorrectly classifying the block -
both location and provider wise (lots of them think this is Verizon
space for some reason in both Canada and Kansas).  I have followed
http://nanog.cluepon.net/index.php/GeoIP and contacted most of these
providers already.  Not one has returned my email/inquiry.

The main problem that I am seeing is that Verizon/UUNET is filtering
access to some of their networks from 100.42.32.0/20.  We are
currently unable to reach any of UUNET.net's authoritative DNS servers
(198.6.1.83, 198.6.1.161, etc) and appear to be filtered by some
Verizon Business/UUNET routers.

$ traceroute 198.6.1.83
traceroute to 198.6.1.83 (198.6.1.83), 30 hops max, 40 byte packets
1  209.65.192.129 (209.65.192.129)  1.491 ms  1.716 ms  1.942 ms
2  vl41-irtr1.dan100.net.kywimax.com (209.65.192.45)  0.551 ms  0.582
ms  0.587 ms
3  rrcs-173-197-155-189.west.biz.rr.com (173.197.155.189)  0.474 ms
0.519 ms  0.505 ms
4  ae8.chcgill3-rtr1.kc.rr.com (65.28.199.197)  20.349 ms  20.340 ms  20.409 ms
5  ae-5-1.cr0.chi30.tbone.rr.com (66.109.6.112)  20.243 ms  20.235 ms  20.223 ms
6  107.14.17.147 (107.14.17.147)  27.982 ms  27.567 ms  27.540 ms
7  216.156.72.165.ptr.us.xo.net (216.156.72.165)  20.945 ms
te1-2-0d0.cir1.chicago2-il.us.xo.net (216.156.72.5)  20.920 ms
216.156.72.157.ptr.us.xo.net (216.156.72.157)  20.912 ms
8   (204.255.168.97)  20.868 ms  20.826 ms  20.910 ms
9   (152.63.66.77)  36.133 ms  36.243 ms  36.233 ms
10   (152.63.43.109)  45.859 ms  45.853 ms  45.843 ms
11   (152.63.38.9)  45.177 ms  45.175 ms  45.168 ms
12  * * *
13  * * *
14  *  (207.18.173.162)  46.105 ms !X *

(pos5-0.soesr1.ash.ops.us.uu.net)

I have contacted VZW Business' IP-NOC and was not really given a
contact that could help me with this situation.  I have also emailed
filters at lists.verizonbusiness.com and I'm awaiting a response
(hopefully).

Would anyone happen to have an idea of why I am seeing so many
problems with this block, and who I may be able to reach out to at VZB
to hopefully get this issue resolved?

Thanks.



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