All Products
Search
Document Center

Edge Security Acceleration:DescribeDcdnTopDomainsByFlow

Last Updated:Aug 21, 2025

Call the DescribeDcdnTopDomainsByFlow operation to query your domain names ranked by traffic. You can retrieve data from the last 90 days.

Operation description

If you do not specify StartTime and EndTime, data for the current month is returned by default. If you specify StartTime and EndTime, data is returned for the specified time range.

Try it now

Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

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

dcdn:DescribeDcdnTopDomainsByFlow

none

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

StartTime

string

No

The beginning of the time range to query. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.

2016-03-01T04:00:00Z

EndTime

string

No

The end of the time range to query. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.

The end time must be later than the start time.

2016-03-14T07:34:00Z

Limit

integer

No

The number of domain names to return. Default value: 20. Valid values: 1 to 100.

20

Response elements

Parameter

Type

Description

Example

object

DomainOnlineCount

integer

The total number of domain names that are in the Running state under your account.

68

EndTime

string

The end of the time range.

2016-03-14T07:34:00Z

StartTime

string

The start of the time range.

2016-03-14T06:34:00Z

RequestId

string

The request ID.

4E09C5D7-E1CF-4CAA-A45E-8727F4C8FD70

DomainCount

integer

The total number of domain names under your account.

68

TopDomains

object

TopDomain

array<object>

The list of top domain names.

object

MaxBps

integer

The peak bandwidth.

22139626

Rank

integer

The rank.

1

TotalAccess

integer

The total number of requests.

3

TrafficPercent

string

The percentage of traffic.

21.686305274906182

DomainName

string

The domain name.

example.com

TotalTraffic

string

The total traffic.

123

MaxBpsTime

string

The time when the peak bandwidth was reached. The time is in UTC and follows the ISO 8601 standard.

2018-11-01T08:10:00Z

Examples

Success response

JSON format

{
  "DomainOnlineCount": 68,
  "EndTime": "2016-03-14T07:34:00Z",
  "StartTime": "2016-03-14T06:34:00Z",
  "RequestId": "4E09C5D7-E1CF-4CAA-A45E-8727F4C8FD70",
  "DomainCount": 68,
  "TopDomains": {
    "TopDomain": [
      {
        "MaxBps": 22139626,
        "Rank": 1,
        "TotalAccess": 3,
        "TrafficPercent": "21.686305274906182",
        "DomainName": "example.com",
        "TotalTraffic": "123",
        "MaxBpsTime": "2018-11-01T08:10:00Z"
      }
    ]
  }
}

Error codes

HTTP status code

Error code

Error message

Description

400 MissingTimeParameter The StartTime and EndTime must be both specified. You must set both the start time and the end time.
400 InvalidStartTime.Malformed The specified StartTime parameter is invalid. The format of the specified start time is invalid. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.
400 InvalidEndTime.Malformed The specified EndTime is invalid. The format of the specified end time is invalid. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.
400 InvalidEndTime.Mismatch The specified EndTime is earlier than the StartTime. The end time is earlier than the start time.
400 InvalidStartTime.ValueNotSupported The specified StartTime is invalid. The specified start time is invalid.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.