All Products
Search
Document Center

Alibaba Cloud DNS:Limits

Last Updated:Oct 09, 2025

Limit item

Limit

Description

Number of custom protection rules

100

A maximum of 100 custom protection rules can be created per account.

Number of threat intelligence protection rules

100

A maximum of 100 threat intelligence protection rules can be created per account. The limits for internal DNS firewalls and public recursive firewalls are calculated separately.

Number of blocked domain names per custom protection rule

2,000

A maximum of 2,000 domain names can be blocked by each custom protection rule. A wildcard domain name is counted as a single domain name.

Number of source IP address segments for DNS requests per protection rule

100

  • Each protection rule supports a maximum of 100 source IP address segments.

  • Protection rules include custom protection rules and threat intelligence protection rules.

Number of protection rules with the same blocked domain names and effective scope

10

A maximum of 10 protection rules can have the same blocked domain names and effective scope per account.

Number of associated VPCs for the same blocked domain name

100

A maximum of 100 VPCs can be associated with the same blocked domain name per account.

Number of associated scopes (VPCs or dedicated configuration IDs) for the same secondary intelligence type

100

A maximum of 100 scopes (VPCs or dedicated configuration IDs) can be associated with the same secondary intelligence type per account. VPCs and dedicated configuration IDs are counted separately.

Number of protection rules with the same secondary intelligence type (or any type) and the same effective scope

10

A maximum of 10 protection rules can have the same secondary intelligence type and the same effective scope per account.

Note

In a cross-account scenario, if a VPC is associated with a protection rule, only the account that owns the rule can manage its association and dissociation. Other accounts cannot associate that VPC with or dissociate it from any protection rules.