Limitations

The maximum number of intranet domains is 10.
The maximum number of record sets that can be set for each domain name is 500.
The maximum number of record values that can be included in each record set is 8.
If you need to exceed the above limitations, you can apply for an upgrade by submitting a service ticket.

Resource Pool Introduction

The intranet DNS has different capabilities in different resource pools, specifically categorized into regional resource pools and availability zone resource pools.

Regional resource pools are resource pools without the concept of availability zones. In regional resource pools, the capability of intranet DNS may be limited to a single data center and does not support the function of cross-availability zone.

Availability zone resource pools are further divided into single-availability zone resource pools and multiple-availability zone resource pools.

Single-availability zone resource pools have a network structure similar to regional resource pools, but host resources within a single availability zone. Intranet DNS capabilities may still be limited to a single availability zone, and cross-availability zone capabilities are not supported.

Multi-availability zone resource pools allow you to host resources across multiple availability zones within a single region. The intranet DNS has cross-availability zone capabilities for connectivity and resolution between different availability zones.

Differentiation by resource pool

Specific resource pool information is provided below:

Regional Resource Pool

Hongkong2

Feature Differences

Feature	Regional Resource Pool	Availability Zone Resource Pool
Domain name recursive forwarding (Global Domain)	Supported	Not supported
PTR (Reverse mapping of IPV4 addresses to domain names)	Supported	Not supported
Cloud product intranet domain name authoritative resolution	Supported	Not supported
Creating inbound endpoints	Supported	Not supported
Deleting inbound endpoints	Supported	Not supported
Querying inbound endpoints	Supported	Not supported
Modifying inbound endpoints	Supported	Not supported
IDC access to inbound endpoints via private line	Supported	Not supported