Dual-stack endpoint support - Amazon Identity and Access Management
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Dual-stack endpoint support

IAM provides a dual-stack public endpoint that supports both IPv4 and IPv6 clients. A dual-stack endpoint enables clients to communicate with IAM using either IPv4 or IPv6 addresses.

The IAM dual-stack public endpoint at https://iam.global.api.amazonwebservices.com.cn supports both IPv4 and IPv6 clients. The IAM dual-stack public endpoint can also be accessed privately from your virtual private cloud (VPC) using Amazon PrivateLink. For more information about creating private interface VPC endpoints for IAM, see Create a VPC endpoint for IAM.

The IAM public endpoint at https://iam.cn-north-1.amazonaws.com.cn, unlike the dual-stack public endpoint, supports only IPv4 clients. When accessed privately from your VPC using Amazon PrivateLink, the IAM public endpoint can support both IPv4 and IPv6 clients.

For more information about IPv6 addressing for your VPCs, see IP addressing for your VPCs and subnets in the Amazon VPC User Guide. For more information about how to configure your VPC for dual-stack mode, see IPv6 support for your VPC in the Amazon VPC User Guide.