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CIDRBase is a network subnet allocation tool for developers and infrastructure teams. Its core goal is to automatically allocate subnet blocks within Infrastructure as Code workflows, avoiding the need to maintain static CIDR ranges in Terraform, Cloudformation, and similar configurations over the long term. It addresses a niche but real pain point in cloud network planning: making subnet allocation more automated, searchable, and integration-friendly.
Based on the main site content, CIDRBase supports integration with Terraform and Cloudformation, and offers an easy-to-use UI, API Access, and the ability to integrate with popular IPAM solutions. Its positioning is clear: it focuses on CIDR/subnet lookup and allocation rather than trying to be a general-purpose cloud management platform. However, the site does not specify which IPAM products, cloud providers, or plugins are supported, nor does it provide API examples, SDKs, authentication details, or rate-limit information. It also does not disclose whether the product is open source or closed source, or whether self-hosting is supported, so enterprises with compliance or private deployment requirements will need to verify these points further.
Pricing is fairly transparent: the free Developer/Hobbiest plan supports 1 user, Terraform and Cloudformation, and 100 lookups per month; Team costs $4.99/month and includes 5 users, 1000 lookups, plus API Access; Corporate costs $49.99/month and includes 100 users, unlimited lookups, and API Access. Teams with more than 100 users need to contact the company for enterprise pricing. For small teams, the Team plan has a low entry cost; for high-frequency automation scenarios, Corporate’s unlimited lookups are more attractive.
The strengths are its focused positioning, IaC tool integration, simple pricing, and API availability starting from the Team plan. It is suitable for developers, DevOps teams, and platform engineering teams already using Terraform or Cloudformation. The downside is that public information is limited: documentation quality, support responsiveness, IPAM ecosystem coverage, deployment model, and security capabilities cannot be judged from the site content alone. If a team only needs a small amount of CIDR allocation, the free plan is worth trying; if the use case involves complex multi-account or multi-region network planning, its integration depth and reliability should be validated first.
The site does not provide information about access from China, payment methods, or localized support, so its availability in China is unknown. If network access or payment becomes an obstacle, alternatives include building custom allocation rules with Terraform modules/variables, using built-in VPC/IPAM capabilities from cloud providers, or integrating an existing enterprise IPAM system with IaC workflows to achieve similar functionality.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on cidrbase.com official site.
cidrbase.com is an United States API & Data provider. TG4G tracks its product information, with monthly pricing from $4.99, an overall rating of 7.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach cidrbase.com directly.