Limits for Your Classic Load Balancer
To view the current limits for your Classic Load Balancers, use the Limits page of the Amazon EC2 console or the describe-account-limits (AWS CLI) command. To request a limit increase, use the Elastic Load Balancing Limits form.
Your AWS account has the following limits related to Classic Load Balancers.
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Load balancers per region: 20
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Listeners per load balancer: 100
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Security groups per load balancer: 5
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Registered instances per load balancer: 1,000
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Subnets per Availability Zone per load balancer: 1
