How do I associate a static public IP address with my EC2 Windows or Linux instance or network interface?

Short description

An Elastic IP address is a static public IPv4 address that's associated with your AWS account in a specific AWS Region. Unlike an auto-assigned public IP address, an Elastic IP address is preserved after you stop and start your instance in a virtual private cloud (VPC).

Note: You can't use an auto-assigned public IP address to retain or reserve the current public IP address that's assigned to the instance. You also can't convert an auto-assigned public IP address to an Elastic IP address.

To associate an Elastic IP address with your EC2 instance, use one of the following options:

• The Amazon EC2 console
• The AWS Command Line Interface (AWS CLI)
• AWS Tools for PowerShell

Note: The default quota for Elastic IP addresses is five per Region per account. For more information, see Elastic IP address quota.

Resolution

Note: If you receive errors when you run AWS CLI commands, then see Troubleshooting errors for the AWS CLI. Also, make sure that you're using the most recent AWS CLI version.

Complete the following steps:

1. Allocate an Elastic IP address from either Amazon's pool of public IPv4 addresses or bring your own IP addresses (BYOIP) to your account.
2. Associate the Elastic IP address with your instance or network interface.

You can also disassociate an Elastic IP address, and then associate it with a different instance.

Related information

How can I assign a static IP address to my Amazon EC2 Windows instance?

Elastic IP addresses

Amazon EC2 instance IP addressing

Stop and start Amazon EC2 instances