ipPrefix

Description

Return the CIDR subnet for a given IP address and subnet size.

Syntax

Like many functions in DataPrime, ipPrefix supports two notations, function and method. These interchangeable forms allow flexibility in how you structure expressions.

Function notation

ipPrefix(ip: string, subnetSize: number): string

Method notation

(ip: string).ipPrefix(subnetSize: number): string

Arguments

Name	Type	Required	Description
ip	string	true	The IP address to process
subnetSize	number	true	Number of mask bits in the subnet, e.g. 10 produces a /10 CIDR range

Example

Use case: Derive the subnet from an IP address

Compute the subnet for a given IP when the number of mask bits is known.

Example data

{
    "ip": "155.123.7.4"
}

Example query

Function notation

create ip_subnet from ipPrefix(ip, 10)

Method notation

create ip_subnet from ip.ipPrefix(10)

Example output

{
    "ip": "155.123.7.4",
    "ip_subnet": "155.64.0.0/10"
}