# ProvisionPublicIpv4PoolCidr
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Provision a CIDR to a public IPv4 pool.

For more information about IPAM, see [What is IPAM?](https://docs.amazonaws.cn/vpc/latest/ipam/what-is-it-ipam.html) in the *Amazon VPC IPAM User Guide*.

## Request Parameters
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The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see [Common Query Parameters](CommonParameters.md).

 **DryRun**   
A check for whether you have the required permissions for the action without actually making the request and provides an error response. If you have the required permissions, the error response is `DryRunOperation`. Otherwise, it is `UnauthorizedOperation`.  
Type: Boolean  
Required: No

 **IpamPoolId**   
The ID of the IPAM pool you would like to use to allocate this CIDR.  
Type: String  
Required: Yes

 **NetmaskLength**   
The netmask length of the CIDR you would like to allocate to the public IPv4 pool. The least specific netmask length you can define is 24.  
Type: Integer  
Required: Yes

 **NetworkBorderGroup**   
The Availability Zone (AZ) or Local Zone (LZ) network border group that the resource that the IP address is assigned to is in. Defaults to an AZ network border group. For more information on available Local Zones, see [Local Zone availability](https://docs.amazonaws.cn/AWSEC2/latest/UserGuide/ec2-byoip.html#byoip-zone-avail) in the *Amazon EC2 User Guide*.  
Type: String  
Required: No

 **PoolId**   
The ID of the public IPv4 pool you would like to use for this CIDR.  
Type: String  
Required: Yes

## Response Elements
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The following elements are returned by the service.

 **poolAddressRange**   
Information about the address range of the public IPv4 pool.  
Type: [PublicIpv4PoolRange](API_PublicIpv4PoolRange.md) object

 **poolId**   
The ID of the pool that you want to provision the CIDR to.  
Type: String

 **requestId**   
The ID of the request.  
Type: String

## Errors
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For information about the errors that are common to all actions, see [Common client error codes](errors-overview.md#CommonErrors).

## See Also
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For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr) 
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/ProvisionPublicIpv4PoolCidr)