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RE: ARIN, and reservations?
From: "Richard Jimmerson" <richardj () arin net>
Date: Thu, 17 May 2001 12:21:04 -0400


Hello Alex,

For instance, we were assigned 64.21/17 about a year ago, 
with 64.21/16 reserved (we were told).

ARIN does not guarantee reservations.  We do our best to make
contiguous allocations, and often do, but sometimes it is not
possible.

ARIN receives one or two /8s at a time from the IANA and
keeps aggregation in mind when making allocations. However,
we also have to demonstrate 80 percent of that IP address 
space has been allocated when requesting additional IP 
address space from the IANA.

PS: as an aside, as anyone else noticed ARIN continually, 
over the last year or so, making the allocations smaller 
and smaller? Our first allocation ever was a /17; now we 
get them in chunks of /19's. 

It is ARIN's current policy to issue IP address space to
organizations based to their three month need.  ARIN staff
review requests and make allocations in accordance with
this policy.

Richard Jimmerson
Director of Operations
American Registry for Internet Numbers (ARIN)



-----Original Message-----
From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On Behalf Of
Alex Rubenstein
Sent: Thursday, May 17, 2001 10:43 AM
To: nanog () nanog org
Subject: ARIN, and reservations?




An interesting note; has anyone else been assigned 
non-contiguous space
when the contiguous block had been 'reserved' for you? 

For instance, we were assigned 64.21/17 about a year ago, 
with 64.21/16
reserved (we were told). It was then extended to a /17 + /18.

We went to get more, and now we've got some other /19 (they haven't
actually assigned it). 

The point is, if 64.21/16 had been reserved, as they had said 
was done,
today we'd only be making one announcement; 64.21/16; 
instead, we have to
announce a /17, /18, and a new /19, or three times the announcements.

On a grand scale, or even a moderate scale, three times the 
announcements
is a significant amount. 

Any comments?

PS: as an aside, as anyone else noticed ARIN continually, 
over the last
year or so, making the allocations smaller and smaller? Our first
allocation ever was a /17; now we get them in chunks of 
/19's. Does ARIN
have any interest or care in the size of the global routing tree?





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