most reasonable ipam tools will track or express unallocated vs allocated space.
netdot has a lovely address-space container/block view for managing free vs allocated space joel On 10/31/15 9:51 AM, John Steve Nash wrote: > Hi, > > I'm looking for any tool or a way I could specify a CIDR and the prefixes > that are being used within this CIDR and the tool show me all free > supernets. > > Example: > > 192.168.0.0/24 - CIDR > > Used subnet's: > > 192.168.0.1/32 > 192.168.0.8/27 > 192.168.0.64/26 > 192.168.0.68/32 > 192.168.0.96/29 > > Tool Result => Free Subnet's: > > 192.168.0.2/31 > 192.168.0.4/30 > 192.168.0.32/27 > 192.168.0.128/25 > > Regards, > > John >
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