Creates an Active Directory replication subnet object.
Active Directory · Risk: High · Documentation Verified
Last verified: 2026-10-26
Microsoft ActiveDirectory reference: Creates an Active Directory replication subnet object. The syntax and selected example below are adapted from the pinned Windows Server 2025 reference. Module availability, target configuration and delegated permissions determine whether it can run in your environment. Documentation and parameter text: Microsoft, CC BY 4.0; formatting adapted by Cmdlet World. No execution testing is claimed.
Use an account with the target resource permissions documented for New-ADReplicationSubnet. Modifying administrative cmdlets may require elevation or delegated administration. This catalog does not assert that ordinary users can execute the command.
Supported environments
Windows / ActiveDirectory · Windows Server 2025 documentation; feature/module prerequisites apply
Parameters
-AuthType
Specifies the authentication method to use. The acceptable values for this parameter are: - Negotiate or 0 - Basic or 1 The default authentication method is Negotiate. A Secure Sockets Layer (SSL) connection is required for the Basic authentication method.
-Confirm
Prompts you for confirmation before running the cmdlet.
-Credential
Specifies a user account that has permission to perform this action. The default is the current user. Type a user name, such as User01 or Domain01\User01, or enter a PSCredential object, such as one generated by the Get-Credential cmdlet. If you type a user name, you will be prompted for a password. This parameter is not supported by any providers installed with Windows PowerShell.
-Description
Specifies a description of the object. This parameter sets the value of the Description property for the object. The LDAP Display Name (ldapDisplayName) for this property is description.
-Instance
Specifies an instance of a subnet object to use as a template for a new subnet object. You can use an instance of an existing subnet object as a template or you can construct a new subnet object by using the Windows PowerShell command line or by using a script. Method 1: Use an existing subnet object as a template for a new subnet object. To retrieve an instance of an existing subnet object, use the Get-ADReplicationSubnet cmdlet. Then provide this object to the *Instance* parameter of the New-ADReplicationSubnet cmdlet to create a new subnet object. You can override property values of the new object by setting the appropriate parameters. Method 2: Create a new ADReplicationSubnet and set the property values by using the Windows PowerShell command line interface. Then pass this object to the *Instance* parameter of the New-ADReplicationSubnet cmdlet to create the new subnet object. Note: Specified attributes are not validated, so attempting to set attributes that do not exist or cannot be set raises an error.
-Location
Specifies a description of the physical location of this subnet.
-Name (required)
Specifies the name of the subnet. This parameter sets the Name property of the Active Directory object. The LDAP display name (ldapDisplayName) of this property is name. Subnet names in Active Directory take the form network/bits masked. For example, the subnet object 172.16.72.0/22 has a subnet of 172.16.72.0 and a 22-bit subnet mask.
-OtherAttributes
Specifies object attribute values for attributes that are not represented by cmdlet parameters. You can set one or more parameters at the same time with this parameter. If an attribute takes more than one value, you can assign multiple values. To identify an attribute, specify the LDAP display name (ldapDisplayName) defined for it in the Active Directory schema. To specify a single value for an attribute: -OtherAttributes @{'AttributeLDAPDisplayName'=value} To specify multiple values for an attribute: -OtherAttributes @{'AttributeLDAPDisplayName'=value1,value2,...} You can specify values for more than one attribute by using semicolons to separate attributes. The following syntax shows how to set values for multiple attributes: -OtherAttributes @{'Attribute1LDAPDisplayName'=value; 'Attribute2LDAPDisplayName'=value1,value2;...} The following examples show how to use this parameter. To set the value of a custom attribute called favColors that takes a set of Unicode strings, use the following syntax: -OtherAttributes @{'favColors'="pink","purple"} To set values for favColors and dateOfBirth simultaneously, use the following syntax: -OtherAttributes @{'favColors'="pink","purple"; 'dateOfBirth'=" 01/01/1960"}
-PassThru
Returns an object representing the item with which you are working. By default, this cmdlet does not generate any output.
-Server
Specifies the Active Directory Domain Services (AD DS) instance to connect to, by providing one of the following values for a corresponding domain name or directory server. The service may be any of the following: Active Directory Lightweight Domain Services (AD LDS), AD DS, or Active Directory snapshot instance. Specify the Active Directory Domain Services instance in one of the following ways: Domain name values: - Fully qualified domain name - NetBIOS name Directory server values: - Fully qualified directory server name - NetBIOS name - Fully qualified directory server name and port The default value for this parameter is determined by one of the following methods in the order that they are listed: - By using the *Server* value from objects passed through the pipeline - By using the server information associated with the AD DS Windows PowerShell provider drive, when the cmdlet runs in that drive - By using the domain of the computer running Windows PowerShell
-Site
Specifies the site associated with this subnet.
-WhatIf
Shows what would happen if the cmdlet runs. The cmdlet is not run.
Prerequisites
Windows with the ActiveDirectory module and the Windows feature or management tools that provide it. Confirm target connectivity and version compatibility using the linked Microsoft reference.
Security considerations
This cmdlet changes system state. Review every target and parameter in the official reference, test outside production, and prepare an appropriate backup or rollback. Do not execute the example automatically.
Examples
Example 1: Create a subnet
New-ADReplicationSubnet -Name "10.0.0.0/25"
This command creates a subnet named 10.0.0.0/25. Source: Microsoft, CC BY 4.0; transcript prompt/output removed. This example was not executed.