IP Address Manager (IPAM) automates IP address planning and allocation across multiple accounts and VPCs, replacing manual spreadsheet tracking that leads to IP conflicts and costly rework.
Use cases
Centralized address planning Network administrators can use IPAM to plan available CIDR blocks for the business. In an organization with multiple accounts, network administrators can share planned address pools with member accounts.  | Address resource allocation Automatically allocate CIDR blocks to VPCs based on allocation rules. Reserve CIDR blocks as needed to avoid address conflicts.  |
Global resource management After associating an IPAM with a resource discovery, you can centrally view and manage all VPCs and vSwitches across all operating regions and identify address conflicts.  | Conflict detection and usage monitoring Identify overlapping CIDR blocks before they cause connectivity issues. Track IP utilization to proactively scale capacity.  |
How it works
IPAM is a modular feature. You must select one region to host it, which becomes the hosted region. Plan and manage all address resources across regions using IPAM. These regions become the operating regions of IPAM. If a region within the scope fails, it does not affect other regions.
Create an IPAM instance in a hosted region. Add operating regions as needed.
The system creates two default scopes, each representing an IP address space:
Public: For all public spaces. Allocate and use only IPv6 CIDR blocks provided by Alibaba Cloud.
Private: For all private spaces. Allocate and use IPv4 CIDR blocks. You can also create custom private scopes.
Create an IPAM Pool within an IPAM scope. Divide pools and provision CIDR blocks if necessary.
Subpools divide large CIDR blocks into smaller ones — for example, by region — that you can allocate to departments or lines of business.
Each subpool can be associated with security rules, avoiding IP conflicts and meeting security needs.
Allocate CIDR blocks from pools to VPCs. You can also create custom allocations for hybrid or multi-cloud environments.
More information
Billing
IPAM is in public preview and currently free of charge.
Supported regions
Area | Regions |
Asia Pacific - China | China (Hangzhou), China (Shanghai), China (Nanjing - Local Region, Closing Down), China (Qingdao), China (Beijing), China (Zhangjiakou), China (Hohhot), China (Ulanqab), China (Shenzhen), China (Heyuan), China (Guangzhou), China (Chengdu), China (Hong Kong), China (Wuhan - Local Region), and China (Fuzhou - Local Region, Closing Down) |
Asia Pacific - Others | Japan (Tokyo), South Korea (Seoul), Singapore, Malaysia (Kuala Lumpur), Indonesia (Jakarta), Philippines (Manila), and Thailand (Bangkok) |
Europe & Americas | Germany (Frankfurt), UK (London), US (Silicon Valley), and US (Virginia) |
Middle East | UAE (Dubai) and Saudi Arabia (Riyadh - Partner Region) |
Quota
Quota name | Description | Default limit | Adjustable |
ipam_quota_per_region | The maximum number of IPAMs that you can create per region. | 1 | No |
ipam_scope_quota_per_ipam | The maximum number of IPAM scopes per IPAM. | 5 | |
ipam_pool_quota_depth | The maximum depth per pool. | 10 | |
ipam_cidr_quota_per_ipam_pool | The maximum number of CIDR blocks that can be provisioned per pool. | 50 | |
ipam_sub_pool_quota_per_ipam_pool | The maximum number of sub-pools per pool. | 50 | |
ipam_pool_quota_per_scope | The maximum number of pools per private IPAM scope. | 500 | |
custom_ipam_resource_discovery_quota_per_region | The maximum number of custom resource discoveries per account per region. | 1 | |
resource_share_quota_per_ipam_resource_discovery | The maximum number of shared resources per resource discovery. | 100 | |
shared_ipam_resource_discovery_quota_per_user | The maximum number of shared resource discoveries per user. | 100 | |
resource_share_quota_per_ipam_pool | The maximum number of shared resources per IPAM pool. | 100 | |
shared_ipam_pool_quota_per_user | The maximum number of shared pools per user. | 100 | |
ipam_public_ipv6_top_pool_quota_per_region_isp | The maximum number of public IPv6 top-level IPAM pools that a user can create per ISP type per region. | 1 | |
ipam_cidr_quota_per_public_ipv6_top_pool | The maximum number of CIDR blocks that a user can provision for a public IPv6 top-level IPAM pool in a region. | 1 |