# IpamRouteOriginAuthorization
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Contains information about a Route Origin Authorization (ROA) published in the RPKI. A ROA cryptographically attests that a specific ASN is authorized to originate a specific IP address prefix.

## Contents
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 ** asn **   
The Autonomous System Number (ASN) authorized by the ROA.  
Type: String  
Required: No

 ** expiration **   
The expiration date of the ROA.  
Type: Timestamp  
Required: No

 ** match **   
Specifies whether the ROA matches the route announcement.  
Type: Boolean  
Required: No

 ** maxLength **   
The maximum prefix length that the ASN is authorized to announce.  
Type: Integer  
Required: No

 ** prefix **   
The IP address prefix authorized by the ROA in CIDR notation.  
Type: String  
Required: No

## 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 SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/IpamRouteOriginAuthorization) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/IpamRouteOriginAuthorization) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/IpamRouteOriginAuthorization)