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
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 (LCUs) per Region	0	Yes