--- sourceDocument: Australia Telecommunications Network Inventory sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/telecom-network-inventory Release : - australia ft:locale : - en-US ft:publication_title : - Australia Telecommunications Network Inventory ft:clusterId : - telninv bundleId : - telninv workflow : - Customer and Industry --- # CIDR to IP range function # CIDR to IP range function {#ariaid-title1} Release version: Australia Updated March 12, 2026 ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read Classless Inter-Domain Range (CIDR) to IP range flow action enables you to create a set of IP addresses using the Classless Inter-Domain Range (CIDR) using Telecommunications Network Inventory application based on the input that you receive when you instantiate an inventory. Upon calling this flow action, a CIDR is fetched using the given IP subnetwork. Further, using the CIDR a set of IP addresses are created. These IP addresses are further stored in the allocated IP addresses table. This function also ensures that there is no other allocated IP address created for this particular IP subnetwork. ## Roles and availability {#cidr_to_ip_range__section_aty_p2v_mxb} Users with the admin role can add an action to a flow and define the configuration details of the flow. This function is available as a Flow Designer action in the Telecommunications Network Inventory application so that you can perform inventory-related data operations. ## Input fields {#cidr_to_ip_range__section_ry1_r2v_mxb} {#cidr_to_ip_range__table_ovs_s2v_mxb__entry__3} | Field name | Description | Data type | |-|-|-| | Change Task | Provide change task number for this task | Reference | | IP Subnetwork | Provide name of the subnetwork from where the CIDR must be fetched | String | [Table 1. Input fields of CIDR to IP range function] {#cidr_to_ip_range__table_ovs_s2v_mxb} ## Output {#cidr_to_ip_range__section_zsj_v4b_wxb} The following table lists the information about the function output. {#cidr_to_ip_range__table_trd_glb_wxb__entry__3} | Name | Description | Data type | |-|-|-| | Allocated IP address | Returns a glide a record | Record | [Table 2. Output of function] {#cidr_to_ip_range__table_trd_glb_wxb} **Related concepts** * [Allocate Free Number function](https://servicenow-prod.fluidtopics.net/PuuJW2JxrgTywUnIAXcLeg "The Allocate Free Number function enables you to assign free numbers from the Telecommunications Network Inventory number record. You use this function to allocate a quantity of numbers from a specified range to add against the configuration item (CI) in a number element.") * [Create CI From Template function](https://servicenow-prod.fluidtopics.net/LL~zoSfWRCAzN6vgmL65sw "The TNI Create CI From Template function enables you to create the inventory instance in the designated site or equipment holder in the Telecommunications Network Inventory application. This occurs when you instantiate an inventory with the inventory template. You can automatically create the inventory when you instantiate the network inventory design and assign process.") * [Cascade Update function](https://servicenow-prod.fluidtopics.net/W97Jp~xw_w8ibvUCGhteRw "The Cascade Update function enables you to update a configuration item (CI) attribute in the Telecommunications Network Inventory application and cascade the change in all related CIs. You can use this function to automatically cascade the field values in related CIs when you use Workflow Studio.") * [Create and Assign Range/Single Number function](https://servicenow-prod.fluidtopics.net/gjw3tsjWew5ep25EHTlyEA "The Create and Assign Range/Single Number function enables you to create the inventory number records for a number range when you process the network inventory workflow.") * [Create Logical Interface function](https://servicenow-prod.fluidtopics.net/2nX46P9be0B6QeJSId3OKA "The Create Logical Interface function enables you to create logical interfaces in the Telecommunications Network Inventory application.") * [Create Logical Connection function](https://servicenow-prod.fluidtopics.net/DgjILFpYXEo~QjRh9KK9ZQ "The Create Logical Connection function enables you to create a logical connection record in the Telecommunications Network Inventory application based on the input (interfaces) that you receive when you instantiate an inventory.") * [Create Physical Connection function](https://servicenow-prod.fluidtopics.net/7ieQdTkzr9dlznGE7OWaYw "The Create Physical Connection function enables you to create a physical connection record in the Telecommunications Network Inventory application based on the input that you receive when you instantiate an inventory.") * [Create IP subnetwork function](https://servicenow-prod.fluidtopics.net/A5Gcil3U92nQAk1e9LyYJQ) * [Get Interface Summary function](https://servicenow-prod.fluidtopics.net/eBCtV3e6ngo0JOIWyFGiJw "The Get Interface Summary function enables you to retrieve all the network interface records that are associated with the input. You can use this function to automatically get the details of the available interface, connected interface, and the physical connection of the equipment in the Telecommunications Network Inventory application when you use Workflow Studio.") * [Lookup Next Hub function](https://servicenow-prod.fluidtopics.net/ZzBLvcSLnnYarEgYkudhZQ "The Lookup Next Hub function enables you to take the network interface record as input and return the details of the related physical connection record. You can automatically get the details of the physical connection and interconnected ports of the equipment in the Telecommunications Network Inventory application when you use the Workflow Studio application.") * [Path Search function](https://servicenow-prod.fluidtopics.net/Y0XR1w7cHadZ_06YQjXcOQ "The Path Search function enables you to execute the path computation function between the starting and ending sites in the Telecommunications Network Inventory application. You can use this function for the path computation when you process the network inventory design and assign.")