Amazon Web Services
General Reference (Version 1.0)
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AWS Service Limits

The following tables provide the default limits for AWS services for an AWS account. Unless otherwise noted, each limit is per region. The limits listed below are only the limits that can be changed. Many services contain limits that cannot be changed. For more information about the limits for a specific service, see the documentation for that service.

If your support plan includes Trusted Advisor, you can use it to display your usage and limits for each service in a specific region. For more information, see Trusted Advisor.

You can request an increase for these limits by performing the following steps. These increases are not granted immediately, so it may take a couple of days for your increase to become effective.

  1. Go to the AWS Support Center page, sign in, if necessary, and click Open a new case.

  2. Under Regarding, select Service Limit Increase.

  3. Under Limit Type, select the type of limit to be increased, then fill in all of the necessary fields in the form and click the button at the bottom of the page for your desired method of contact.

Amazon AppStream Limits

An Amazon AppStream account has a default limit of 10 simultaneous sessions per AWS account.

Auto Scaling Limits

ResourceDefault Limit
Number of launch configurations100
Number of Auto Scaling groups20
Number of Auto Scaling lifecycle hooks50

For information about additional documented limits, see Auto Scaling Limits.

AWS CloudFormation Limits

ResourceDefault Limit
Stacks20

For information about additional documented limits, see AWS CloudFormation Limits.

Amazon CloudFront Limits

ResourceDefault Limit
Data transfer rate1,000 Mbps
Requests per second1000
Web distributions per AWS account200
RTMP distributions per AWS account100
Alternate domain names (CNAMEs) per distribution100
Origins per distribution25
Cache behaviors per distribution25
Whitelisted headers per cache behavior10
Whitelisted cookies per cache behavior10
SSL certificates per AWS account when serving HTTPS requests using dedicated IP addresses (no limit when serving HTTPS requests using SNI)0

Amazon CloudSearch Limits

ResourceDefault Limit
Partitions10
Search instances50

For information about additional documented limits, see Understanding Amazon CloudSearch Limits.

DynamoDB Limits

ResourceDefault Limit
Read capacity units (individual table)10,000
Write capacity units (individual table)10,000
Read capacity units (account)20,000
Write capacity units (account)20,000
Maximum number of tables 256

For information about additional documented limits, see Limits in Amazon DynamoDB.

Amazon EBS Limits

ResourceDefault Limit
Number of EBS volumes5,000
Number of EBS snapshots10,000
Total volume storage of General Purpose (SSD) volumes20 TiB
Total volume storage of Provisioned IOPS (SSD) volumes20 TiB
Total volume storage of Magnetic volumes20 TiB
Total provisioned IOPS40,000

For information about additional documented limits, see Amazon EC2 Service Limits.

Amazon EC2 Limits

ResourceDefault Limit
Number of Elastic IP addresses for EC2-Classic. For information about EC2-VPC, see Amazon VPC Limits.5
Throttle on the emails that can be sent from your Amazon EC2 accountThrottle applied
Number of on-demand instances Varies depending on instance type. For more information, see How many instances can I run in Amazon EC2.
Number of Spot Instance requests 5 instance requests per region. New AWS accounts might have lower limits. For more information, see Spot Request Limits.
Bid Price for Spot Instances Four times the On-Demand price. For more information, see Spot Bid Price Limits.
Number of Reserved Instances20 instance reservations per Availability Zone, per month

For information about additional documented limits, see Amazon EC2 Service Limits.

ElastiCache Limits

ResourceDefault Limit
Nodes20

AWS Elastic Beanstalk Limits

ResourceDefault Limit
Applications25
Versions500
Environments200

Elastic Load Balancing Limits

ResourceDefault Limit
Number of load balancers20

For information about additional documented limits, see Elastic Load Balancing Limits.

Elastic Transcoder Limits

ResourceDefault Limit
Pipelines per region4
Active jobs per pipeline1,000
Outputs per job30
User-defined presets50

For information about additional documented limits, see Limits on Pipelines, Jobs, and Presets.

IAM Limits

ResourceDefault Limit
Users5,000
Groups100
Groups per user10
Roles250
Instance profiles100
Server certificates20

For information about additional documented limits, see Limitations on IAM Entities.

Amazon Kinesis Limits

ResourceDefault Limit
Number of shards per account 10

For information about additional documented limits, see Amazon Kinesis Sizes and Limits.

AWS OpsWorks Limits

ResourceDefault Limit
Stacks40
Layers per stack40
Instances per stack40
Apps per stack40

Amazon RDS Limits

ResourceDefault Limit
Instances40
Reserved Instances40
Total storage for all DB instances100 TB
Manual Snapshots50
Parameter Groups50
Security Groups25
Subnet Groups20
Subnets per Subnet Group20
Option Groups20
Event Subscriptions20
Read Replicas per Master5

Amazon Redshift Limits

ResourceDefault Limit
Nodes per cluster16
Total nodes per account16
Total snapshots per account20

For information about additional documented limits, see Limits in Amazon Redshift.

Amazon Route 53 Limits

ResourceDefault Limit
Hosted zones500
Resource record sets per hosted zone10,000
Health checks50

For information about additional documented limits, see Limits on Amazon Route 53 API Requests and Entity Counts.

Amazon SES Limits

The following are the default limits for Amazon SES in the sandbox environment.

ResourceDefault Limit
Daily sending quota200 messages per 24 hour period.
Maximum send rate1 email per second.
Recipient address verificationAll recipient addresses must be verified.

The following are the default limits for Amazon SES in the production environment.

ResourceDefault Limit
Daily sending quota10,000 messages per 24 hour period.
Maximum send rate5 emails per second.
Recipient address verificationRecipient addresses do not need to be verified.

For information about additional documented limits, see Limits in Amazon SES.

Amazon SimpleDB Limits

ResourceDefault Limit
Domains250

For information about additional documented limits, see Limits.

Amazon Simple Notification Service Limits

ResourceDefault Limit
Topics3,000

Amazon VPC Limits

ResourceDefault LimitComments
Number of VPCs 5 
Number of subnets per VPC200 
Number of Internet gateways 5You can create as many Internet gateways as your 'VPCs per region' limit. Only one Internet gateway can be attached to a VPC at a time.
Number of virtual private gateways 5Only one virtual private gateway can be attached to a VPC at a time.
Number of customer gateways 50 
Number of VPN connections 5010 per virtual private gateway.
Number of route tables per VPC200Including the main route table. You can associate one route table to one or more subnets in a VPC.
Number of entries per route table50This is the limit for the number of non-propagated entries per route table. If this limit is increased, network performance may be impacted.
Number of Elastic IP addresses5This is the limit for the number of VPC Elastic IPs you can allocate within a region. This is a separate limit from the EC2 Elastic IP address limit.
Number of security groups per VPC100If this limit is increased, network performance may be impacted, depending on the way the security groups are configured.
Number of rules per security group50The multiple of 'rules per security group' and 'security groups per network interface' cannot exceed 250. For example, if you want 100 rules per security group, we’d decrease your number of security groups per network interface to 2.
Number of security groups per network interface5The multiple of ‘security groups per network interface’ and ‘rules per security group’ cannot exceed 250. For example, if you want 10 security groups per network interface, we’d decrease your number of rules per security group to 25.
Number of network ACLs per VPC200You can associate one network ACL to one or more subnets in a VPC. This limit is not the same as the number of rules per network ACL.
Number of rules per network ACL40

This is the sum of both ingress and egress rules in a single network ACL, where the limit for ingress rules is 20, and the limit for egress rules is 20.

Number of BGP advertised routes per VPN connection100If this limit is increased, network performance may be impacted.
Number of active VPC peering connections per VPC50The maximum limit is 125 peering connections per VPC. The number of entries per route table should be increased accordingly; however, network performance may be impacted.
Number of outstanding VPC peering connection requests25This is the limit for the number of outstanding VPC peering connection requests that you've requested from your account.
Expiry time for an unaccepted VPC peering connection request1 week (168 hours) 

For information about additional documented limits, see Amazon VPC Limits.

Amazon WorkSpaces Limits

ResourceDefault LimitComments
WorkSpaces 2To prevent denial of service attacks, accounts new to the Amazon WorkSpaces service are limited to two WorkSpaces.

For information about additional documented limits, see Amazon WorkSpaces Limits.