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What is AWS Public IP Limit? (Public IP inelastic IP)

Is there a limit on the number of public IP addresses that you can use for a given AWS region? (Inelastic IPs)

Note. I know that you are limited to 5 Elastic IPs. However, if you select "auto assign IP" when creating and the AWS instance, you are given an IP address that changes when you restart. My question is, what is the limit in these “public IP addresses” that change every time your instance is stopped and started?

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There are no restrictions on public IP addresses that you can use in AWS. The limit is only available by the number of instances you can run, and this instance limit can also be increased by contacting AWS support.

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It is limited by the number of instance restrictions in your account and region. By default, you have a limit of 20 instances / region. You can run all instances on a public subnet using auto-assign-public-ip and use 20 public IP addresses.

For example, you requested an instance limit extension of 200 with justification and, if approved, you can use up to 200 public IP addresses / regions.

To view your limit: View current limits

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Source: https://habr.com/ru/post/1652379/

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