About ReView

ReView is a first-of-its-kind digital IP address audit tool. It is revolutionary provisioning and IP address management software. Review is a free tool from IPv4.Global working with 6connect.

Many organizations are deterred from performing a detailed inventory of their IP addresses by the potential time and expense involved. ReView enables network operators and administrators to quickly and easily gain visibility of their IP address allocations, and more effectively manage their records. It allows users to understand how their IP addresses are allocated and assigned.

The Challenges

IP address management becomes especially challenging when outside circumstances complicate the task. There are many such complications, as when:

  • A merger or acquisition adds address blocks of unknown provenance;
  • Inefficient earlier development of a network is suspected;
  • Growing network demands require a deep understanding of existing resources;
  • Potentially large numbers of addresses are not reclaimed in spite of many cancellations;
  • Patchwork assignments suggest large swaths of addresses are potentially available for sale;
  • Installation of an IPAM suggests an audit to confirm data integrity

The Solutions

Incomplete and/or manual IP addresses management often results in increased risk of service interruptions, creates potential security risks, and makes updates to the network more time consuming. To correct many network flaws, ReView delivers the information needed to optimize efficiency and unlock cost savings.


ReView lets network managers discover exactly how their address blocks are used, allowing them to renumber if necessary, so they can more efficiently plan to acquire new space or divest unneeded blocks. Often this aggregation improves routing convergence time. It also puts similar devices in similar subnets so security policies can be sensibly applied.

Financial Benefits

A ReView address audit delivers more than efficiency. The financial benefits of address consolidation avoids unnecessary purchases of new addresses and often reveals hidden, unused IPv4 address blocks which can be monetized.

User Controls

ReView allows users to control the exposure of their networks to the tool so that sensitive, proprietary and high-value data is secure. Users can:

  • Upload configuration files after removing all sensitive data (such as passwords);
  • Allow SNMP read-only access – or create a read-only account – and device lists to extract network information;
  • Run an nmap scan of their network.

A Thorough Examination

The application reporting includes routers, switches, firewalls, and load balancers. It includes DHCP servers and DNS servers. A heatmap of subnet efficiency is delivered to the user which describes potential renumbering opportunities.


In addition to the extensive controls described above, ReView runs as local software – not a cloud application. So, no data is shared with IPv4.Global, 6connect or any other entity.

Downloading ReView

To perform an IP address audit using ReView, users need to enter name, company, and email address for a free account, download and run the app from Windows, Apple, or Linux. They then choose their preferred network discovery approach – which is performed either via a fully automatic network scan, or by importing configuration details directly to their local ReView app. The app then lists the IP blocks that are in use, allowing users to see how efficiently their IP address blocks are being used.

Request ReView

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Downloading ReView

Once your submission information to the left is submitted, you’ll be sent an email with a link to download ReView.

That link will take you to a page with operating system options, Windows, Apple, and Linux. Simply download the appropriate app and run it locally.