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How Many ECSs Can One EIP Be Assigned to?

Each EIP can be bound to only one ECS at a time.

Multiple ECSs can share the same EIP, but the EIP and the ECSs must be in the same region. To enable ECSs across AZs in a VPC to share an EIP, you can use a NAT gateway. For more information, see NAT Gateway User Guide.

Parent topic: EIP