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Amazon VPC IP Address Manager
What it is
Amazon VPC IP Address Manager (IPAM) helps AWS users plan, organize, track, and monitor IP address space for workloads. It can allocate CIDR blocks to VPCs using business rules, group address space into routing and security domains, and monitor resource usage against those rules. IP assignment history can support audits and troubleshooting network connectivity issues. IPAM also supports cross-account and cross-Region sharing of Bring Your Own IP addresses, and can provision Amazon-provided contiguous IPv6 CIDR blocks to pools for VPC creation. It integrates with AWS Organizations and Infoblox infrastructure, and pools can be shared through AWS Resource Access Manager. For governance, it uses IAM service-linked roles and managed policies to monitor CIDRs and store IPAM metrics in Amazon CloudWatch; allocation tags can be referenced in IAM and Service Control Policies. The Free Tier covers one AWS account and Region. The Advanced Tier is for resources across two or more accounts or Regions and includes private IPv4 management, pool sharing, and IP history auditing. It is billed at $0.00027 per active IP address per hour. An address is billable when associated with an Elastic Network Interface attached to a resource; addresses on unattached interfaces are not billed.
For and against
For
- Automatically allocates CIDRs using business rules.
- Maintains IP assignment history.
- Supports IPv6 and cross-account, cross-Region sharing.
- Integrates with AWS Organizations and Infoblox.
Against
- Only one IPAM can be created per AWS Region.
- Advanced Tier charges by active IP address per hour.
- Free Tier scope is one account and Region.
The verdict
Amazon VPC IP Address Manager offers address planning, history, and allocation controls for AWS environments. Choose between the single-account, single-Region Free Tier and the broader Advanced Tier, whose charges depend on active addresses.
Who it suits
IPAM may suit AWS users managing address allocation and visibility within one account or across multiple accounts and Regions. The Free Tier is described for a single account and Region, while the Advanced Tier addresses broader management needs.
Plans and prices
IPAM Advanced Tier
For resources across two or more AWS Regions or accounts · Hourly charge per active IP address managed · Includes private IPv4 management, pool sharing with AWS accounts, and IP history auditing
Read 8 Oct 2026 · aws.amazon.com
IPAM Free Tier
Single AWS Region and account · BYOIP IPv4 and IPv6 · Amazon-provided contiguous IPv6 addresses · Public IP Insights
Read 8 Oct 2026 · aws.amazon.com
On the record
- Address organization
- IPAM organizes IP address space into routing and security domains and monitors resource usage against business rules.docs.aws.amazon.com · read 8 Oct 2026
- Advanced Tier billing
- An IP address is billable when it is associated with an Elastic Network Interface attached to a resource; addresses on unattached interfaces are not billed.aws.amazon.com · read 8 Oct 2026
- Allocation controls
- Allocation tags can be referenced in IAM and Service Control Policies to govern access to IP address allocations.aws.amazon.com · read 8 Oct 2026
- CIDR allocation
- IPAM can automatically allocate CIDRs to VPCs using specific business rules.docs.aws.amazon.com · read 8 Oct 2026
- Cross-account and Region
- IPAM supports cross-Region and cross-account sharing of Bring Your Own IP addresses.docs.aws.amazon.com · read 8 Oct 2026
- Integrations
- IPAM can integrate with AWS Organizations and Infoblox infrastructure; pools can also be shared using AWS Resource Access Manager.docs.aws.amazon.com · read 8 Oct 2026
- IP history
- IPAM provides a history of IP address assignments in an organization.docs.aws.amazon.com · read 8 Oct 2026
- IPv6
- IPAM can provision Amazon-provided contiguous IPv6 CIDR blocks to pools for VPC creation.docs.aws.amazon.com · read 8 Oct 2026
- Purpose
- Amazon VPC IP Address Manager helps plan, track, and monitor IP addresses for AWS workloads.docs.aws.amazon.com · read 8 Oct 2026
- Security and governance
- IPAM uses AWS Identity and Access Management service-linked roles and managed policies to monitor CIDRs and store IPAM metrics in Amazon CloudWatch.docs.aws.amazon.com · read 8 Oct 2026
- Single-account limit
- The documentation says you can create only one IPAM per AWS Region.docs.aws.amazon.com · read 8 Oct 2026
- Troubleshooting
- IPAM can help troubleshoot network connectivity issues.docs.aws.amazon.com · read 8 Oct 2026
- Who it serves
- AWS describes the Free Tier for a single account and Region, and the Advanced Tier for IP address management across multiple accounts or Regions.aws.amazon.com · read 8 Oct 2026