Allocations, not IPs.  And yes if they are reasonably static an excel 
spreadsheet can go higher.


-----Original Message-----
From: NANOG [] On 
Behalf Of Scott Weeks
Sent: Monday, June 11, 2018 2:40 PM
Subject: RE: What are people using for IPAM these days?

--- wrote:
From: "McBride, Mack" <>

If you are managing more than a thousand IPs allocations spreadsheets are not 
manageable for IPv4.

I managed a /15, two /16s and several /24s (so, well 
over a quarter million IPs) on a spreadsheet for years.  
So, that's an 'it depends' answer.

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