IP Subnetwork form

  • Release version: Australia
  • Updated June 16, 2026
  • 1 minute to read
  • The IP Subnetwork form defines a subdivision of an IP Address Block or a nested subdivision of another IP Subnetwork. The fields on this form are listed below.

    Field Description
    Name (Nested Pool Name on creation) User-friendly name for the IP Subnetwork.
    CIDR The CIDR notation that defines the address range of this subnetwork. Must fall within the parent’s range, must be more specific (longer prefix) than the parent’s, and must not duplicate any sibling under the same parent. To learn more about CIDR validation, seeCIDR validation rules for IP Address Blocks and IP Subnetworks .
    Managed Network The Managed Network this subnetwork belongs to. Read-only and pre-populated when the parent has a Managed Network set; editable when the parent has none. Can't differ from the parent’s value.
    Parent Pool The parent IP Address Block or IP Subnetwork. Read-only after creation.
    DNS Domain The DNS domain associated with this subnetwork. Optional.
    Description Free-text description. Optional.
    Life Cycle Stage The current life-cycle stage of the subnetwork. Default value: Operational.
    Life Cycle Stage Status The current life-cycle stage status. Default value: In Use. The sub network is active when Life Cycle Stage is Operational and Life Cycle Stage Status is In Use.
    Reported Addresses In Use The count of addresses currently in use under this subnetwork.
    Reported Free Addresses The count of addresses available for use under this subnetwork.
    Reported Reserved Addresses The count of addresses flagged as reserved under this subnetwork.