Quotas for your Application Load Balancers - Elastic Load Balancing

Quotas for your Application Load Balancers

Your AWS account has default quotas, formerly referred to as limits, for each AWS service. Unless otherwise noted, each quota is Region-specific. You can request increases for some quotas, and other quotas cannot be increased.

To view the quotas for your Application Load Balancers, open the Service Quotas console. In the navigation pane, choose AWS services and select Elastic Load Balancing. You can also use the describe-account-limits (AWS CLI) command for Elastic Load Balancing.

To request a quota increase, see Requesting a quota increase in the Service Quotas User Guide. If the quota is not yet available in Service Quotas, use the Elastic Load Balancing limit increase form.

Load balancers

Your AWS account has the following quotas related to Application Load Balancers.

Name Default Adjustable
Application Load Balancers per Region 50 Yes
Certificates per Application Load Balancer (excluding default certificates) 25 Yes
Listeners per Application Load Balancer 50 Yes
Number of times a target can be registered per Application Load Balancer 1,000 No
Target Groups per Action per Application Load Balancer 5 No
Target Groups per Application Load Balancer 100 No
Targets per Application Load Balancer 1,000 Yes
Target groups

The following quotas are for target groups.

Name Default Adjustable
Target Groups per Region 3,000 * Yes
Targets per Target Group per Region (instances or IP addresses) 1,000 Yes
Targets per Target Group per Region (Lambda functions) 1 No
Load balancers per target group 1 No

* This quota is shared by Application Load Balancers and Network Load Balancers.

Rules

The following quotas are for rules.

Name Default Adjustable
Rules per Application Load Balancer (excluding default rules) 100 Yes
Condition Values per Rule 5 No
Condition Wildcards per Rule 5 No
Match evaluations per rule 5 No
Trust stores

The following quotas are for trust stores.

Name Default Adjustable
Trust stores per account 20 Yes
Number of listeners using mTLS in verify mode, per load balancer. 2 No
Certificate authority certificates

The following quotas are for CA certificates.

Name Default Adjustable
CA certificates per trust store 25 Yes
CA certificate size 16KB No
Maximum certificate chain depth 4 No
Certificate revocation lists

The following quotas are for certificate revocation lists.

Name Default Adjustable
Revocation lists per trust store 30 Yes
Revocation entries per trust store 500,000 Yes
Revocation list file size 50MB No
HTTP headers

The following are the size limits for HTTP headers.

Name Default Adjustable
Request line 16 K No
Single header 16 K No
Entire response header 32 K No
Entire request header 64 K No