172.0.0.0/12 has been Allocated

Blake Hudson blake at ispn.net
Thu Aug 23 09:04:06 CDT 2012


I wonder if ATT will be returning some of those /16 and /15 allocations 
it has in return for the /12 - http://whois.arin.net/rest/org/SIS-80/nets

How does one suddenly justify needing 1,000,000 more IP addresses 
(explosive expected growth in the next couple months?)

--Blake

Owen DeLong wrote the following on 8/23/2012 1:29 AM:
> AT&T should just be glad there was a /12 for them to get.
>
> That isn't going to be true for much longer.
>
> If you are counting on an IPv4 free pool to run your business next year, you are making a bad bet.
>
> Owen
>
> On Aug 22, 2012, at 22:54 , "Otis L. Surratt, Jr." <otis at ocosa.com> wrote:
>
>> My apologies again, I saw it as 127.0.0.0. and not 172.0.0.0.
>>
>> I've been working long hours last couple nights. Yeah you are probably right, since they to pulled that one very close to RFC1918.
>>
>> http://bgp.potaroo.net/ipv4-stats/allocated-arin.html
>>
>>
>> I would hate to be AT&T for this IP allocation. Heck, I would simple push more IPv6 if I were them.
>>
>>
>>
>> -----Original Message-----
>> From: Dan White [mailto:dwhite at olp.net]
>> Sent: Thursday, August 23, 2012 12:37 AM
>> To: Otis L. Surratt, Jr.
>> Cc: nanog at nanog.org
>> Subject: Re: 172.0.0.0/12 has been Allocated
>>
>> You can do a whois search at arin.net to see the allocation.
>>
>> 172.0.0.0/12 is often confused with the private 172.16.0.0/12 address
>> space, which I would consider a 'scraping the bottom of the barrel'
>> allocation.
>>
>> I also noticed a couple of subnets in that range showing up in the weekly
>> Cidr reports, beginning in July.
>>
>> On 08/23/12 00:29 -0500, Otis L. Surratt, Jr. wrote:
>>> Dan,
>>>
>>> Can you provide a link to support this?
>>> If this is true, I wonder how this will work.
>>>
>>> Otis
>>> -----Original Message-----
>>> From: Dan White [mailto:dwhite at olp.net]
>>> Sent: Thursday, August 23, 2012 12:24 AM
>>> To: nanog at nanog.org
>>> Subject: 172.0.0.0/12 has been Allocated
>>>
>>> 172.0.0.0-172.15.255.255 was allocated on 2012-08-20 to AT&T Internet
>>> Services.
>> -- 
>> Dan White
>




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