Quotas - Amazon Route 53

Quotas

Amazon Route 53 API requests and entities are subject to the following quotas (formerly referred to as "limits").

Using Service Quotas to view and manage quotas

You can use the Service Quotas service to view quotas and to request quota increases for many AWS services. For more information, see the Service Quotas User Guide. (You can currently use Service Quotas to view and manage only Route 53 and Route 53 Resolver quotas. Domain registration quotas aren't available.)

Note

To view quotas and request higher quotas for Route 53, you must change the Region to US East (N. Virginia). To view quotas and request higher quotas for Resolver, change to the applicable Region.

Quotas on entities

Amazon Route 53 entities are subject to the following quotas.

For information on getting current quotas (formerly referred to as "limits"), see the following Route 53 actions:

  • GetAccountLimit – Gets quotas on health checks, hosted zones, reusable delegation sets, traffic flow policies, and traffic flow policy records

  • GetHostedZoneLimit – Gets quotas on records in a hosted zone and on Amazon VPCs that you can associate with a private hosted zone

  • GetReusableDelegationSetLimit – Gets the quota on the number of hosted zones that you can associate with a reusable delegation set

Quotas on domains

Entity Quota

Domains

50 per AWS account

Request a higher quota.

Quotas on hosted zones

Entity Quota

Hosted zones

500 per AWS account

Request a higher quota.

Hosted zones that can use the same reusable delegation set

100

Request a higher quota.

Amazon VPCs that you can associate with a private hosted zone

100

Request a higher quota.

Private hosted zones that you can associate a VPC with

No quota *

Authorizations that you can create so you can associate VPCs that were created by one account with a hosted zone that was created by another account

100

* You can associate a VPC with any or all of the private hosted zones that you control through your AWS accounts. For example, suppose you have three AWS accounts and all three have the default quota of 500 hosted zones. If you create 500 private hosted zones for all three accounts, you can associate a VPC with all 1,500 private hosted zones.

Quotas on records

Entity Quota

Records

10,000 per hosted zone

Request a higher quota.

For a quota greater than 10,000 records in a hosted zone, an additional charge applies.

Values in a record

400 per record

Geolocation, latency, multivalue answer, and weighted records

100 records that have the same name and type

Geoproximity records

30 records that have the same name and type

Quotas on Route 53 Resolver

Entity Quota

Endpoints per AWS Region

4 per AWS account

Request a higher quota.

IP addresses per endpoint

6

IP addresses per rule

6

Rules per AWS Region

1000 per AWS account

Request a higher quota.

Associations between rules and VPCs per AWS Region

2000 per AWS account

Request a higher quota.

Queries per second per IP address in an endpoint

10,000*

Query log configurations per AWS Region

20

Query log configuration VPC associations per AWS Region

100

Query log configuration VPC associations per AWS Region (shared using RAM)

100

* The number of DNS queries per second (QPS) varies by the type of query, the size of the response, and the protocol in use. This limit is on a per elastic network interface (ENI) basis. For example, with a limit of 10,000 QPS, 2 ENIs would allow 20,000 QPS. From there you can scale out by adding more ENIs. For information about how to view Amazon CloudWatch metrics for IP addresses for inbound and outbound endpoints, see Metrics for Resolver IP addresses.

Quotas on health checks

Entity Quota

Health checks

200 active health checks per AWS account

Request a higher quota.

Child health checks that a calculated health check can monitor

255

Maximum total length of headers in the response to a health check request

16,384 bytes (16K)

Quotas on query log configurations

Entity Quota

Query log configurations

1 per hosted zone

Quotas on traffic flow policies and policy records

Entity Quota

Traffic policies

For more information about Route 53 traffic flow, see Using traffic flow to route DNS traffic.

50 per AWS account

Request a higher quota.

Traffic policy versions

1,000 per traffic policy

Traffic policy records (referred to as "policy instances" in the Route 53 API, AWS SDKs, AWS Command Line Interface, and AWS Tools for Windows PowerShell)

5 per AWS account

Request a higher quota.

Quotas on reusable delegation sets

Entity Quota

Reusable delegation sets

100 per AWS account

Request a higher quota.

Maximums on API requests

Amazon Route 53 API requests are subject to the following maximums.

Number of elements and characters in ChangeResourceRecordSets requests

ResourceRecord elements

A request cannot contain more than 1,000 ResourceRecord elements. When the value of the Action element is UPSERT, each ResourceRecord element is counted twice.

Maximum number of characters

The sum of the number of characters (including spaces) in all Value elements in a request cannot exceed 32,000 characters. When the value of the Action element is UPSERT, each character in a Value element is counted twice.

Frequency of Amazon Route 53 API requests

All requests

Five requests per second per AWS account. If you submit more than five requests per second, Amazon Route 53 returns an HTTP 400 error (Bad request). The response header also includes a Code element with a value of Throttling and a Message element with a value of Rate exceeded.

Note

If your application exceeds this limit, we recommend that you implement exponential backoff for retries. For more information, see Error Retries and Exponential Backoff in AWS in the Amazon Web Services General Reference.

ChangeResourceRecordSets requests

If Route 53 can't process a request before the next request arrives, it will reject subsequent requests for the same hosted zone and return an HTTP 400 error (Bad request). The response header also includes a Code element with a value of PriorRequestNotComplete and a Message element with a value of The request was rejected because Route 53 was still processing a prior request.

CreateHealthCheck requests

You can submit a maximum of 1,000 CreateHealthCheck requests in a 24-hour period.

Frequency of Route 53 Resolver API requests

All requests

Five requests per second per AWS account per Region. If you submit more than five requests per second in a Region, Resolver returns an HTTP 400 error (Bad request). The response header also includes a Code element with a value of Throttling and a Message element with a value of Rate exceeded.

Note

If your application exceeds this limit, we recommend that you implement exponential backoff for retries. For more information, see Error Retries and Exponential Backoff in AWS in the Amazon Web Services General Reference.