nanog mailing list archives

RE: SORBs


From: Jon Lewis <jlewis () lewis org>
Date: Wed, 6 Jul 2005 11:22:24 -0400 (EDT)


On Wed, 6 Jul 2005, Sanfilippo, Ted wrote:

Regarding the aggregation/deaggregation mess. This is due to the fact
that ARIN is rather strict with IP assignements and how we route
internally.
Because ARIN wants us to use 80% of our ip blocks, before we can request
new assignments from them we have to dole out addresses in /22's to each
city we have, in order to use them up appropriately. Its been a bit of a

Are you saying you have POPs in dozens of cities and do not have your own
network connecting them, but instead buy transit from verio, cogent, and
at&t in each city and announce /22 subnets to them from each of these POPs
using the same (15270) origin ASN with ASN loop detection disabled?

nightmare trying to meet ARIN's policies and also try to meet the
Internet Communities policies. Believe me, I would much rather advertise
a /16 prefix out to the Internet, rather then a /22. We have not been
able to accommodate this unfortunately.

-----Original Message-----
From: Jon Lewis [mailto:jlewis () lewis org]
Sent: Wednesday, July 06, 2005 10:31 AM
To: Sanfilippo, Ted
Cc: nanog () merit edu
Subject: Re: SORBs

On Wed, 6 Jul 2005, Sanfilippo, Ted wrote:

Does anyone know of an easier way to remove IP blocks from a
blacklist?
We received a /16 from ARIN in May and have been trying to get SORB's
to remove the blacklist association on these addresses. They seem to
take forever to remove the blacklist association.

--- 06Jul05 ---
ASnum          NetsNow          NetsAggr        NetGain         % Gain
Description
AS15270    311                    59              252            81.0%
AS-PAETEC-NET - PaeTec.net -a division of PaeTecCommunications, Inc.

Any chance of this deaggregation mess getting cleaned up?

I've contacted sorbs on your behalf, assuming the /16 concerned is
63.138.0.0/16.  This raises a question that interests me as someone who
had to deal with recently bogon space last time I got ARIN space.

63/8 was assigned to ARIN in 1997.  Much of it appears to have been
assigned to ARIN members in the late 90s and very early 2000's.  How did
Paetec happen to get a /16 from 63/8 in 2005?  Was this recently
reclaimed from some defunct company (which could explain the sorbs dul
listing), and Paetec just got lucky?

----------------------------------------------------------------------
 Jon Lewis                   |  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________


----------------------------------------------------------------------
 Jon Lewis                   |  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________


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