I think EfficientIP is able to sync leases and ranges from MS DHCP without touching networks. You can define what will be pushed to IPAM. Infoblox can implement it similar way, or give admins a change to not synchronize networks from MS DHCP.
Hello, I believe it's because you have "| sort -utilization" in the search. Here "sort" limits the ouput to the top 10K results by default. Change it to "| sort 0 -utilization" and that should do it. Best Regards, Bibin Thomas