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North American Network Operators Group

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RE: Address Space & ASN Allocation Process

  • From: Reeves, Rob
  • Date: Mon Sep 26 19:07:56 2005

> Hi,
> Just trying to get some clarity and direction regarding 
> obtaining address space/ASN for my client.
> Is there a minimum address space (?) an entity would need to 
> justify to go directly to RIR (ARIN in this case) as opposed 
> to the upstream provider? Is /20 the minimum allocation? Can 
> my client approach RIR and request for a /23?

The minimum assignment from ARIN is actually a /22, which will only be
given to multi-homed end-users who qualify
(  Other than that, the
smallest assignment is /20.
> If my client do procure a /23 how do they make make sure that 
> this address space will be globally routable?

Regardless of where their IP's come from, all they have to do is
announce them to their upstream providers using BGP.

> Multihome will also be part of their network implementation, 
> can they apply for an ASN number?

Yes, they can apply for an ASN number as long as they can show ARIN that
they are in the process of bringing up connectivity with more than one

ARIN's web page is actually pretty easy to navigate for finding this and
all the other information you will need.  I would suggest checking it
Rob Reeves
IP Network Engineer

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