Quotas for your Application Load Balancers - Elastic Load Balancing
Load balancersTarget groupsRulesTrust storesCertificatesHTTP headersLoad Balancer Capacity Units
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Quotas for your Application Load Balancers

Your Amazon account has default quotas, formerly referred to as limits, for each Amazon 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 Amazon services and select Elastic Load Balancing. You can also use the describe-account-limits (Amazon 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, submit a request for a service quota increase.

Load balancers

Your Amazon 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
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

Certificates

The following quotas apply to certificates, including advertising CA certificate names and certificate revocation lists.

Name Default Adjustable
CA certificate size 16 KB No
CA certificates per trust store 25 Yes
CA certificates subject size per trust store 10,000 Yes
Maximum certificate chain depth 4 No
Revocation entries per trust store 500,000 Yes
Revocation list file size 50 MB No
Revocation lists per trust store 30 Yes
TLS message size 64 K 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

Load Balancer Capacity Units

The following quotas are for Load Balancer Capacity Units (LCU).

Name Default Adjustable
Reserved Application Load Balancer Capacity Units (LCUs) per Application Load Balancer 1500 Yes
Reserved Application Load Balancer Capacity Units (LCU) per Region 0 Yes