[arin-ppml] On the history of early number registrations, ARIN, and ARIN's role in the administration of the Internet number registry

John Curran jcurran at arin.net
Thu Apr 14 16:14:11 EDT 2022

> On 14 Apr 2022, at 3:25 PM, hostmaster at uneedus.com wrote:
> Is there any numbers of exactly:
> How much space is legacy without an RSA/LRSA and

As of 1 Jan 2022 - 

Total IPv4 Address space in the registry:		1,672,630,848

Total IPv4 Address space covered by RSA:		   831,141,888

Total IPv4 Address space covered by LRSA:		   243,232,000

Total IPv4 Address space not under any RSA	   598,256.960

> How much space of that number has had no contact/invalid contact?

Indeterminate - allow us some time to see if this can be readily generated.


John Curran
President and CEO
American Registry for Internet Numbers

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