# RateLimitAsn
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Specifies an Autonomous System Number (ASN) derived from the request's originating or forwarded IP address as an aggregate key for a rate-based rule. Each distinct ASN contributes to the aggregation instance. If you use a single ASN as your custom key, then each ASN fully defines an aggregation instance. 

## Contents
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The members of this exception structure are context-dependent.

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/wafv2-2019-07-29/RateLimitAsn) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/wafv2-2019-07-29/RateLimitAsn) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/wafv2-2019-07-29/RateLimitAsn)