[AusNOG] Less than 10% of IPv4 Addresses Remain Unallocated

[Mark Smith]

On Tue, 19 Jan 2010 23:16:54 -0800
Scott Howard <scott at doc.net.au> wrote:

> Not that I disagree with what they are trying to achieve here, but the math
> here is a bit iffy, depending on what you consider as "available".
> 

They're probably using the H ratio, described in RFC1715 - " The H
Ratio for Address Assignment Efficiency"

> Personally I'd consider the "available" address to be 1/8 through 223/8,
> probably excluding 127/8, and possibly even excluding the various RFC1918
> blocks.
> 
> At most that gives 223 /8's, probably closer to 221.
> 
> Based on
> http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xhtml,
> there are a total of 24 /8's still unallocated by IANA.  Even then it's a
> matter of who's perspective you look at - 1/8 and 27/8 are "allocated" from
> IANA's perspective, but I'm presuming they are completely unallocated from
> APNIC's perspective.
> 
> So IMHO we're not down to 10% yet, but of course to a certain extent the
> difference between 10% and even 15% isn't that significant...
> 
>   Scott.
> 
> 
> 
> On Tue, Jan 19, 2010 at 11:10 PM, Elly Tawhai <elly at apnic.net> wrote:
> 
> > _______________________________________________________________________
> >
> > Less than 10% of IPv4 Addresses Remain Unallocated, says Number Resource
> > Organization
> > _______________________________________________________________________
> >
> > Hi AUSNOG Community,
> >
> > Deploying IPv6 - the next generation of the Internet Protocol - is vital
> > to the continued development of the Internet
> >
> > AMSTERDAM - The Number Resource Organization (NRO), the official
> > representative of the five Regional Internet Registries (RIRs) that
> > oversee the allocation of all Internet number resources, announced today
> > that less than 10 percent of available IPv4 addresses remain
> > unallocated. This small pool of existing IP addresses marks a critical
> > moment in IPv4 address exhaustion, ultimately impacting the future
> > network operations of all businesses and organizations around the globe.
> >
> >