split b

There still seems to be some confusion here, as far as I know there
is no policy at ARIN that provides for a legacy assignment (one
made before ARIN's inception) to be split into multiple parts.

I know of no ARIN policy that prevents this either.

However, according to the guidelines I'm aware of, both parties
would be required to re-justify each /17 worth of space.  Presumeably
they did so, in order for ARIN to approve it.  This is explicitly
required under current ARIN policy, as I understand it.

The problem becomes then, assuming ARIN did approve the rejustification,
that there is no mechanism at ARIN or elsewhere to provide notifications
of current "delegation models" which inidicate what size blocks are
allocated out of what size ranges.  ARIN does operate a Routing Registry
in which this information could be stored programaticlly which could
be queried programaticly or manually to check BGP announcements v.
RIR assignment or allocation.

I believe Randy is correct in his opinion that no policy decision was
made with regard to making assignments out of "Classic B Space" of a
prefix size of /17.  (Which is what happened).  However it seems clear
to me that ARIN polices and guidelines allow for this to happen
under the circumstances described.  Thus it is important that
we take this into consideration.

In message <200006051358.GAA02369 at vacation.karoshi.com>, bmanning at vacation.karoshi
.com writes:
>
> Its useful to send this to the arin-discuss list so that a correct
> impression is made.  The original delegation was made prior to ARIN
> and ARIN simply approved the split of a pre-existing delegation.
>
>	------------------------------------------------------
>
>
>> 
>> that was to MCI, it was split between C&W and Concert due to MCI selling its
>> internet business to C&W in the fall of 1998.
>> 
>> -----Original Message-----
>> From: bmanning at vacation.karoshi.com
>> [mailto:bmanning at vacation.karoshi.com]
>> Sent: Monday, June 05, 2000 9:44 AM
>> To: John.Sweeting at cwusa.com
>> Cc: bmanning at vacation.karoshi.com
>> Subject: Re: split b
>> 
>> 
>>  Hum, according to my database snapshots, 166.49.0.0/16 was delegated 
>> in late 1996/early 1997.  ARIN came into existance in 4q1997. I don't
>> know when the split in 166.49.0.0/16 occured.
>> 
>> 
>> > 
>> > Bill, this does not predate ARIN, this was accomplished through ARIN. 
>> > 
>> > -----Original Message-----
>> > 
>> > 
>> > 	Since this delegation predates ARINs existance, it seems 
>> > 	that ARIN could have very little to say other than they
>> > grandfathered
>> > 	it in.
>> > 
>> > 
>> > > 
>> > > this seems to be missing from the documentation of allocation policy, or
>> i
>> > > am even more confused than usual.
>> > > 
>> > > randy
>> > > 
>> > > 
>> > > rip.psg.com:/usr/home/randy> whois -h whois.arin.net 166.49.0.0   
>> > > Cable & Wireless USA (NETBLK-CW-NETCS)
>> > >    9000 Regency Parkway, Suite 200
>> > >    Cary, NC 27511
>> > >    US
>> > > 
>> > >    Netname: CW-NETCS20
>> > >    Netblock: 166.49.0.0 - 166.49.127.255
>> > > 
>> > >    Coordinator:
>> > >       Cable & Wireless USA  (IA3-ORG-ARIN)  ipadmin at cw.net
>> > >       919-465-4160
>> > > Fax- 919-465-4187
>> > > 
>> > >    Domain System inverse mapping provided by:
>> > > 
>> > >    NS.CW.NET                    204.70.128.1
>> > >    NS2.CW.NET                   204.70.57.242
>> > >    NS3.CW.NET                   204.70.25.234
>> > >    NS4.CW.NET                   204.70.49.234
>> > > 
>> > >    Record last updated on 16-Sep-1999.
>> > >    Database last updated on 2-Jun-2000 17:47:08 EDT.
>> > > 
>> > > rip.psg.com:/usr/home/randy> whois -h whois.arin.net 166.49.128.0
>> > > Concert Communications Co. (NETBLK-CONCERTCOMM)
>> > >    81 Newgate Street
>> > >    London, EC1A 7AJ
>> > >    GB
>> > > 
>> > >    Netname: CONCERTCOMM
>> > >    Netblock: 166.49.128.0 - 166.49.255.255
>> > > 
>> > >    Coordinator:
>> > >       Koolen, Hans  (HK45-ARIN)  hkoolen at EU.CONCERT.NET
>> > >       +31 20 487 6584 (FAX) +31 20 487 6307
>> > > 
>> > >    Domain System inverse mapping provided by:
>> > > 
>> > >    NS2.EU.CONCERT.NET           195.99.65.212
>> > >    NS1.EU.CONCERT.NET           195.99.66.211
>> > > 
>> > >    Record last updated on 23-Oct-1998.
>> > >    Database last updated on 2-Jun-2000 17:47:08 EDT.
>> > > 
>> > 
>> 
>

--- jerry at fc.net
Director Network Operations/Network Engineering, Wayport, Inc.
512-519-6193 www.wayport.net
8303 Mopac Expressway Suite A300, Austin Tx.