Managed Network and IP address allocation

  • Release version: Australia
  • Updated June 16, 2026
  • 1 minute to read

    • A Managed Network record defines a network scope that can be assigned to an IP Address Block. When assigned, the Managed Network propagates to every IP Subnetwork beneath that block. It also propagates to every allocated IP record beneath those subnetworks.

    Propagation behavior

    The propagation behavior is as follows:

    • When you create an IP Subnetwork beneath an IP Address Block, the Managed Network field behaves differently if the parent block has a Managed Network assigned. In that case, the subnetwork's Managed Network field is pre-populated with the parent's value and is read-only. The subnetwork cannot be assigned to a different Managed Network.
    • When you create an IP Subnetwork beneath an IP Address Block that has no Managed Network assigned, the subnetwork's Managed Network field is editable. You can leave it empty or assign it to any Managed Network. Your choice then propagates down to any nested subnetworks beneath this subnetwork.

    Uniqueness scope

    The Managed Network value defines the scope within which an IP Address Block’s CIDR must be unique. The same CIDR may exist in different Managed Networks. To learn more, see CIDR validation rules for IP Address Blocks and IP Subnetworks.