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Last Updated: Jun 30, 2020


Item Limit Description
Number of private zones 500 You can create up to 500 private zones under an Alibaba Cloud account.
Number of VPCs associated with a private zone 100 You can associate a private zone with up to 100 Virtual Private Clouds (VPCs).
Number of DNS records 10,000 You can add up to 10,000 Domain Name System (DNS) records to each private zone.
Number of queries per second sent by an ECS instance 5,000 per second Each Elastic Compute Service (ECS) instance can send up to 5,000 DNS queries per second.

The 99.9% availability stipulated in the service level agreement (SLA) may be compromised if the number of DNS queries sent per second exceeds the upper limit.