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Anti-DDoS:DescribeDdosCount

Last Updated:Jan 19, 2026

Queries the number of assets that are under DDoS attacks in a specific region. The assets are assigned public IP addresses.

Operation description

Limits

You can call this operation up to 10 times per second per account. If the number of the calls per second exceeds the limit, throttling is triggered. As a result, your business may be affected. We recommend that you take note of the limit when you call this operation.

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Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

yundun-ddos:DescribeDdosCount

get

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

DdosRegionId

string

Yes

The region ID of the asset to query.

Note

You can call the DescribeRegions operation to query the most recent region list.

cn-hangzhou

InstanceType

string

Yes

The type of the asset to query. Valid values:

  • ecs: Elastic Compute Service (ECS) instances.

  • slb: Server Load Balancer (SLB) instances.

  • eip: elastic IP addresses (EIPs).

  • ipv6: IPv6 gateways.

  • swas: simple application servers.

  • waf: Web Application Firewall (WAF) instances of the Exclusive edition.

  • ga_basic: Global Accelerator (GA) instances.

ecs

Response elements

Element

Type

Description

Example

object

The response parameters.

RequestId

string

The ID of the request.

7D66C762-324E-51CE-B461-2007996087B2

DdosCount

object

The number of assets that are under DDoS attacks.

BlackholeCount

integer

The number of assets for which blackhole filtering is triggered.

0

InstacenCount

integer

The total number of assets.

0

DefenseCount

integer

The number of assets for which traffic scrubbing is triggered.

4

Examples

Success response

JSON format

{
  "RequestId": "7D66C762-324E-51CE-B461-2007996087B2",
  "DdosCount": {
    "BlackholeCount": 0,
    "InstacenCount": 0,
    "DefenseCount": 4
  }
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.