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# Quota

**Built-in Authoritative DNS Quota**

<table><thead><tr><th width="228.281982421875">Quota Item</th><th width="116.366455078125">Threshold</th><th>Description</th><th data-hidden>Remarks</th></tr></thead><tbody><tr><td><strong>Number of Domains (Zones)</strong></td><td>10</td><td>Each account can create up to 10 zones. Quota increase can be requested via support ticket.</td><td>Alibaba Cloud: 500</td></tr><tr><td><strong>Associated VPCs per Zone</strong></td><td>10</td><td>Each zone can be associated with up to 10 VPCs. Quota increase can be requested via support ticket.</td><td>Alibaba Cloud: 100</td></tr><tr><td><strong>Number of DNS Records per Zone</strong></td><td>3,000</td><td>Each zone can have up to 3,000 DNS records by default. Quota increase can be requested via support ticket.</td><td>Alibaba Cloud: 100,000</td></tr><tr><td><strong>Weighting Policy</strong></td><td>Supports A and AAAA</td><td>When multiple IPs are configured for the same host record, DNS responses return IPs based on pre-set weights, achieving load balancing.</td><td>Alibaba Cloud supports A, AAAA, CNAME</td></tr><tr><td><strong>Max Records per Host Record</strong></td><td>100</td><td>Each host record can have up to 100 associated DNS records. Quota increase can be requested via support ticket.</td><td>—</td></tr><tr><td><strong>Max DNS Queries per VM (In-VPC)</strong></td><td>1,000 QPS</td><td>Each VM in a VPC can handle up to 1,000 DNS queries per second. Exceeding this may trigger throttling; SLA (99.99%) cannot be guaranteed.</td><td>Alibaba Cloud: 5,000 QPS</td></tr><tr><td><strong>Max DNS Queries for All VMs (In-VPC)</strong></td><td>Unlimited</td><td>Total DNS queries for all VMs in a VPC are unlimited.</td><td>Alibaba Cloud: Unlimited</td></tr><tr><td><strong>Max External Recursive Queries per VM</strong></td><td>Unlimited</td><td>Single VM external recursive queries are not limited.</td><td>Alibaba Cloud: 600 QPS</td></tr><tr><td><strong>Max External Recursive Queries for All VMs in VPC</strong></td><td>Unlimited</td><td>Total external recursive queries for all VMs in a VPC are not limited.</td><td>Alibaba Cloud: 5,000 QPS</td></tr></tbody></table>