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Please note that once a block is assigned, you will also have other options available, including reverse DNS, and IP subassignments
Sub Assigning IP Space
To allow sub assignments, just check the Allow sub assignments check box under Edit. Once the allow sub assignments box is checked, the block may be further split and assigned to other resources. Split blocks may also be re-claimed to the originally assigned resource and re-aggregated. When allow sub assignments is checked, the block is counted as allocated, but not assigned - various statistics in IPAM, on the dashboard, and reporting will reflect this. Sub assignments can be useful for tracking IPs assigned to a customer with multiple subsidaries, or locations.
Unassigning IP Space
When a block is assigned, you will then have the option of unassigning the block from the resource and returning it to the Holding Tank. To return IP space in the Holding Tank to the Available Pool - there are two methods:
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