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Virtual Private Cloud:CreateIpam

Last Updated:Aug 28, 2026

Creates an IP Address Manager (IPAM) instance.

Operation description

  • Each Alibaba Cloud account supports only one IPAM per region.

  • IPAM supports only IPv4 addresses.

  • When you create an IPAM instance:

    • If no custom resource discovery exists in the region, the system creates a default resource discovery and associates it with the IPAM instance.

    • If a custom resource discovery exists in the region, the system converts it to the default resource discovery and associates it with the IPAM instance.

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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

vpc:CreateIpam

create

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

Yes

The region ID of the IPAM instance. Call DescribeRegions to query available regions.

cn-hangzhou

IpamName

string

No

The IPAM name.

The name must be 1 to 128 characters and cannot start with http:// or https://.

abc

OperatingRegionList

array

Yes

The operating regions of the IPAM.

string

No

The operating region of the IPAM.

Note

You can specify one or more regions.

cn-hangzhou

IpamDescription

string

No

The IPAM description.

Must be 1 to 256 characters. Must start with a letter and cannot start with http:// or https://. Defaults to empty.

This is my first Ipam

ResourceGroupId

string

No

The resource group ID.

rg-acfmxazb4ph6aiy****

DryRun

boolean

No

Specifies whether to perform a dry run. Valid values:

  • true: performs a dry run only. The system checks for missing parameters, incorrect syntax, and service limits. If the request passes, the DryRunOperation error code is returned. If the request fails, an error message is returned.

  • false (default): performs a dry run and sends the request. If the request passes, a 2xx HTTP status code is returned.

false

ClientToken

string

No

The client token that ensures request idempotence. Generate a unique token per request. Only ASCII characters are allowed.

Note

If not specified, the system uses the request ID as the client token. The request ID may differ for each request.

123e4567-e89b-12d3-a456-426655440000

Tag

array<object>

No

The tags.

object

No

The tags.

Key

string

No

The tag key. You can specify up to 20 tag keys. Cannot be empty.

Maximum 64 characters. Can contain letters, digits, periods (.), underscores (_), and hyphens (-). Must start with a letter and cannot start with aliyun or acs:. Cannot contain http:// or https://.

FinanceDept

Value

string

No

The tag value. You can specify up to 20 tag values. Empty strings are allowed.

Maximum 128 characters. Cannot contain http:// or https://.

FinanceJoshua

Response elements

Element

Type

Description

Example

object

The response parameters.

RequestId

string

The request ID.

0ED8D006-F706-4D23-88ED-E11ED39DCAC0

IpamId

string

The ID of the IPAM.

ipam-ccxbnsbhew0d6t****

PrivateDefaultScopeId

string

The ID of the default private scope created with the IPAM.

ipam-scope-8wiontzmiy6cg0****

PublicDefaultScopeId

string

The ID of the default public scope created with the IPAM.

ipam-scope-r5c5c7bmym1brc****

DefaultResourceDiscoveryId

string

The ID of the default resource discovery instance.

ipam-res-disco-jt5f2af2u6nk2z321****

DefaultResourceDiscoveryAssociationId

string

The ID of the default resource discovery association.

ipam-res-disco-assoc-jt5fac8twugdbbgip****

ResourceDiscoveryAssociationCount

integer

The number of discovered resources.

1

Examples

Success response

JSON format

{
  "RequestId": "0ED8D006-F706-4D23-88ED-E11ED39DCAC0",
  "IpamId": "ipam-ccxbnsbhew0d6t****",
  "PrivateDefaultScopeId": "ipam-scope-8wiontzmiy6cg0****",
  "PublicDefaultScopeId": "ipam-scope-r5c5c7bmym1brc****",
  "DefaultResourceDiscoveryId": "ipam-res-disco-jt5f2af2u6nk2z321****",
  "DefaultResourceDiscoveryAssociationId": "ipam-res-disco-assoc-jt5fac8twugdbbgip****",
  "ResourceDiscoveryAssociationCount": 1
}

Error codes

HTTP status code

Error code

Error message

Description

400 UnsupportedRegion.Ipam Ipam is not supported in this region. IPAM is not supported in this region.
400 QuotaExceeded.IpamQuotaPerRegion The quota of ipamQuotaPerRegion count is exceeded. The maximum number allowed by IPAM exceeds the limit.
400 IllegalParam.OperatingRegion The operating region is invalid. The operating region is invalid.
400 DryRunOperation Request validation has been passed with DryRun flag set.
400 OperationFailed.OperatingRegionsNeedIncludeIpamRegion The operating regions do not contain IPAM region. The operating regions do not contain IPAM region.
400 UnsupportedFeature.Ipam IPAM is not supported in this region. The IPAM feature is not supported in this region.
400 OptInRequired.Ipam You are not authorized to use the requested service of IPAM. Ensure that you have subscribed to the service you are trying to use. You are not authorized to use the requested service of IPAM. Ensure that you have subscribed to the service you are trying to use.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.