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Re: ip reclamation was Re: Kremen's Buddy?

  • From: william(at)elan.net
  • Date: Tue Sep 12 20:41:56 2006


On Tue, 12 Sep 2006, william(at)elan.net wrote:

How much, though, is used, but not routed publically?
-----------------------
TOTAL FOR IPV4 BLOCKS:

Allocated: 9302367 (/24 blocks) - 63%
Not Allocated: 5377697 (/24 blocks) - 37%
Currently Routed: 6183529 (/24 blocks) - 42%
Not Routed: 8496535 (/24 blocks) - 58%
-----------------------
Simple math from above:
Allocated & Not Routed: 3118838 (/24 blocks) - 21%

Not easily observable means some ip blocks maybe used but are not adverised in public BGP. This is a bit of an issue with certain
part of US Gov.
The larged of these blocks are 6/8, 11/8, 21/8, 22/8, 25/8, 26/8, 28/8, 29/8, 30/8. 51/8, 52/8, 56/8 and I strongly suspect 48/8. This comes to
total 851968 /24s; this still leaves 2266870 /24 blocks that includes
some smaller used but not advertised and some no-longer-used space.
I suspect the total would be around 1/2 of value above, i.e. around
10% of ip space is something that could potentially be reclaimed
(that is unless you want to bug us military who have way too much space).

--
William Leibzon
Elan Networks
william@elan.net




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