Amazon EC2 service quotas
When you create your Amazon Web Services account, we set default quotas (also referred to as limits) on your Amazon resources on a per-Region basis. If you attempt to exceed the quota for a resource, the request fails. For example, there is a maximum number of Amazon EC2 vCPUs that you can provision for On-Demand Instances in a Region. If you attempt to launch an instance in a Region and this request would cause your usage to exceed this quota, the request fails. If this happens, you can reduce your resource usage or request a quota increase.
The Service Quotas console is a central location where you can view and manage your quotas for Amazon services, and request a quota increase for many of the resources that you use. Use the quota information that we provide to manage your Amazon infrastructure. Plan to request any quota increases in advance of the time that you'll need them.
View your current quotas
You can view your quotas for each Region using the Service Quotas console.
To view your current quotas using the Service Quotas console
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Open the Service Quotas console at https://console.amazonaws.cn/servicequotas/home/services/ec2/quotas/
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From the navigation bar (at the top of the screen), select a Region.
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Use the filter field to filter the list by resource name. For example, enter
On-Demandto locate the quotas for On-Demand Instances. -
To view more information, choose the quota name to open the details page for the quota.
Request an increase
You can request a quota increase for each Region.
To request an increase using the Service Quotas console
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Open the Service Quotas console at https://console.amazonaws.cn/servicequotas/home/services/ec2/quotas/
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From the navigation bar (at the top of the screen), select a Region.
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Use the filter field to filter the list by resource name. For example, enter
On-Demandto locate the quotas for On-Demand Instances. -
If the quota is adjustable, choose the quota and then choose Request quota increase.
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For Change quota value, enter the new quota value.
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Choose Request.
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To view any pending or recently resolved requests in the console, choose Dashboard from the navigation pane. For pending requests, choose the status of the request to open the request receipt. The initial status of a request is Pending. After the status changes to Quota requested, you'll see the case number with Amazon Web Services Support. Choose the case number to open the ticket for your request.
For more information, including how to use the Amazon CLI or SDKs to request a quota increase, see Requesting a quota increase in the Service Quotas User Guide.
Restriction on email sent using port 25
By default, Amazon EC2 allows outbound traffic over port 25 only to private IPv4 addresses. Traffic over port 25 is blocked to public IPv4 addresses and IPv6 addresses.
You can request that this restriction be removed. For more information, see
How do I remove
the restriction on port 25 from my Amazon EC2 instance or Lambda function?
This restriction does not apply to outbound traffic over port 25 destined for: