• Despite IPv6 expansion, IPv4 scarcity, legacy systems and market demand mean IPv4 addresses continue to hold operational and economic value.

Introduction

For more than a decade, IPv6 has been positioned as the long-term solution to IPv4 exhaustion. With its vastly expanded address space, IPv6 promises to remove scarcity from Internet addressing altogether. Yet in 2026, IPv4 remains deeply embedded in global networks, cloud platforms and enterprise infrastructure.

While IPv6 adoption continues to grow, demand for IPv4 has not disappeared. Instead, IPv4 addresses have become scarce, tradable resources — often treated as digital capital by enterprises. Service providers, cloud operators and organisations such as LARUS, which operate in IP leasing and management, illustrate how IPv4 continues to play a central role in real-world infrastructure planning.

The question is no longer whether IPv6 will eventually dominate, but whether IPv4 demand will meaningfully decline — and if so, when.

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Why IPv6 adoption has not eliminated IPv4 demand

IPv6 adoption is real, but uneven. Major content platforms and mobile networks support IPv6, yet much of the Internet still relies on IPv4 at critical layers. Legacy systems, customer equipment, enterprise firewalls and software stacks often remain IPv4-dependent, making full transition costly and operationally risky.

For enterprises, IPv4 offers predictability. IPv4 routing behaviour, tooling and troubleshooting practices are well understood, while IPv6 expertise remains uneven across regions and organisations. This creates a strong incentive to continue using IPv4 wherever possible.

Additionally, many global services must operate in dual-stack environments to ensure universal reach. Even organisations that deploy IPv6 internally often require IPv4 externally to maintain compatibility with partners, customers and legacy applications. As long as dual-stack remains the norm, IPv4 demand persists.

Also Read：The long road to IPv4 exhaustion

Scarcity and market dynamics reinforce IPv4 value

The exhaustion of free IPv4 pools has fundamentally changed how addresses are perceived. IPv4 blocks are no longer freely allocated resources; they are scarce assets governed by transfer markets, leasing arrangements and regional policy frameworks.

This scarcity has driven the emergence of secondary markets where IPv4 addresses are bought, sold and leased. Enterprises holding surplus IPv4 space increasingly view it as a balance-sheet asset rather than dormant infrastructure. Leasing models, supported by platforms and service providers such as LARUS, allow address holders to generate recurring revenue while retaining ownership.

IPv6, by contrast, has no comparable scarcity dynamic. Its abundance reduces incentives for monetisation, reinforcing IPv4’s unique position as both an operational necessity and an economic asset.

Case study: IPv4 demand in cloud and enterprise environments

A clear illustration of sustained IPv4 demand can be seen in large-scale cloud and enterprise migrations. As organisations move workloads to public cloud environments, they frequently discover that IPv4 addresses — not compute or storage — become a limiting factor.

In several documented enterprise cases, companies consolidating on-premises infrastructure identified unused IPv4 blocks during cloud migration projects. Rather than abandoning IPv4 entirely, these organisations monetised surplus space through sales or leasing, while retaining sufficient IPv4 capacity to support hybrid and customer-facing services.

Cloud providers themselves continue to charge premiums for IPv4 usage, reflecting ongoing scarcity. This pricing structure incentivises enterprises to optimise IPv4 usage, but not to eliminate it entirely — reinforcing continued demand even as IPv6 adoption grows.

Why IPv4 demand is likely to persist

Several structural factors suggest IPv4 demand will remain strong in the medium term:

  • Legacy dependence: Many applications and devices remain IPv4-only.
  • Operational risk: IPv6 migration requires expertise and carries transition risks.
  • Global interoperability: IPv4 remains the lowest common denominator for connectivity.
  • Economic incentives: IPv4 scarcity supports leasing and resale markets.

Rather than being replaced outright, IPv4 is increasingly treated as a premium, limited resource — deployed where necessary and monetised where surplus exists.

Conclusion

IPv6 is essential for the Internet’s long-term growth, but it has not eliminated the need for IPv4. Instead, the two protocols coexist in a complex, economically shaped environment. IPv4 scarcity, operational realities and market mechanisms ensure continued demand, particularly for enterprises and service providers with global reach.

For organisations managing IP resources, understanding IPv4’s future means recognising it not as obsolete infrastructure, but as a constrained, valuable asset. As long as compatibility, legacy systems and economic incentives remain, IPv4 will continue to matter — even in an IPv6-enabled Internet.