How do I get an additional static IP address for my Lightsail account?

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By default, Lightsail limits static IP addresses to five for each AWS Region. If you require more than five static IP addresses in your Region, then submit a service quota increase request.

Complete the following steps:

1. Open the Service Quotas console.
2. In the navigation pane, choose AWS services.
3. In the search box, enter Lightsail, and then select it.
4. In Service quotas, choose Static IP addresses.
5. Choose Request increase at account-level.
6. Enter the new value that you want to increase your quota to.
7. Choose Request.

After AWS reviews and processes your request, you receive an email notification.

Note: Static IP addresses that you detach from an instance remain in your account. However, if you delete a static IP address from your account, then you can't reassign it to another instance. Also, you can't add the same static IP address back to the account.

It's a best practice to proactively monitor and manage your service quotas to be sure that you have enough resources to support your usage requirements. 

To view the quotas for other AWS services, see Service endpoints and quotas.