Recent Large Allocations from ARIN

Every few days I look at ARIN's home page to see how many addresses they have remaining, and to see if there have been any large allocations in the past few days. Sometimes they go for days with not change, then suddenly hand out a few thousand. Usually when I notice a big change, I'll update my projection for ARIN runout.

Since ARIN publishes a list of all of their allocations, it's pretty straightforward to get other information about what's going on in the industry, too. For instance, I downloaded the allocation list, then looked at all assignments/allocations of /17 or larger so far in 2013. The /17 boundary was arbitrary.

Organization#IPv4 Addresses in 2013
AT&T4194304
Akamai3670016
Nobis917504
Time Warner Cable753644
BrightHouse Networks524288
Microsoft524288
ColoCrossing458752
Enzu360448
Unified Layer327680
Sonic294912
CloudRadium229376
Peg Tech229376
Comcast196608
EGI Hosting196608
Hostwinds196608
Viasat196608
Rackspace163840
CloudFlare131072
Micfo131072
Rogers131072

In no way do I mean to imply that any of these companies is doing anything improper. Quite the contrary, I would infer that these are successful, growing companies, who need more IPv4 address space to support their expanding customer base.

There's broad representation there from Hosting/CDN/cloud companies and ISPs, and there doesn't seem to be any correlation between IPv6 deployment and IPv4 consumption. Conspicuously missing are mobile operators (Verizon Wireless, T-Mobile; I can't tell whether AT&T is wireless or wireline); it's impossible to tell whether IPv6 LTE has relieved pressure or they are just fine with CGN. There are some interesting possible trends to watch, among companies who keep coming back for more address space:

OrganizationAllocation SizeAllocation Date
ATT104857620130301
 104857620130521
 104857620130809
 104857620131023
Akamai52428820130125
104857620130315
209715220130712
ColoCrossing3276820130129
 3276820130312
 6553620130422
 6553620130607
13107220130816
 13107220131021
Nobis13107220130408
26214420130506
52428820130724
Enzu 3276820130325
6553620130422
13107220130607
 13107220130926
Hostwinds3276820130130
 3276820130514
 3276820130722
 3276820130819
 3276820131007
 3276820131113
PegTech3276820130614
 6553620130802
13107220131108
Sonic3276820130131
6553620130510
6553620130822
13107220131120

One might reasonably assume that an organization that is returning periodically for another allocation will continue to do so. I see no periodicity in the ISP allocations (except AT&T, possibly their wireless business) for 2013, but fairly regular visits to the well among these hosting companies. In particular, let's pay attention to those growing allocations; if they continue to grow, this handful of companies could accelerate the runout date.

Lee Howard
5 December 2013
@WLeeCoyote